Apache OpenNLP CVE-2026-82617: built-in EMAIL and URL regex name-finder patterns enable regular expression denial-of-service and stack exhaustion in affected releases.
CVE-2026-82617 affects Apache OpenNLP opennlp-core 3.0.0-M1 before 3.0.0-M6 and opennlp-tools 2.0.0 before 2.5.12. The DEFAULT_REGEX_NAME_FINDER.EMAIL and DEFAULT_REGEX_NAME_FINDER.URL patterns in RegexNameFinderFactory contain ambiguous nested quantifiers. Applications using these built-in finders on attacker-controlled input can be forced into regular expression denial of service or stack exhaustion. Fixes shipped in opennlp-tools 2.5.12 and 3.0.0-M6.
Apache OpenNLP CVE-2026-67211: unbounded map pre-sizing in SymSpellModelSerializer enables out-of-memory denial of service in opennlp-symspell 3.0.0-M4/M5.
CVE-2026-67211 affects the opennlp-symspell artifact in versions 3.0.0-M4 and 3.0.0-M5 only. The SymSpellModelSerializer.create() method performs unbounded map pre-sizing, allowing crafted input to trigger out-of-memory denial of service. Releases 1.x and 2.x are unaffected because the spellcheck extension was introduced in 3.0.0-M4; the issue is resolved in 3.0.0-M6.
Apache Camel K CVE-2026-80354 lets tenants reference secrets by name in the operator namespace, exposing other tenants' secrets.
Apache disclosed a moderate authorization bypass (CVE-2026-80354) in Apache Camel K's Builder trait, where mavenProfiles ValueSources resolve tenant-named secrets in the operator namespace. A tenant can reference secrets by name, potentially exposing secrets belonging to other tenants or the operator. Affected versions are 2.0.0 before 2.9.3 and 2.10.1 before 2.10.2; fixes are available in 2.9.3 and 2.10.2.
Apache Camel K CVE-2026-80352 lets CR authors inject arbitrary Kubernetes objects via Master trait serviceAccountName YAML injection.
Apache disclosed a critical YAML injection vulnerability (CVE-2026-80352, improper control of code generation) in Apache Camel K's Master trait serviceAccountName setting. An authorized custom resource author can inject arbitrary Kubernetes objects, potentially enabling unauthorized resource manipulation. Affected versions are 2.0.0 before 2.9.3 and 2.10.1 before 2.10.2; fixes are available in 2.9.3 and 2.10.2.
Apache Camel K CVE-2026-80351 lets tenant-controlled Maven repository content execute code inside the operator pod; fixed in 2.9.3/2.10.2.
Apache disclosed a critical eval injection vulnerability (CVE-2026-80351) in Apache Camel K, where improperly neutralized directives in dynamically evaluated Maven configuration let tenant-controlled repository content reach Maven execution inside the operator pod. This can allow tenant-controlled content to influence code execution in the operator context. Affected versions are 2.0.0 before 2.9.3 and 2.10.1 before 2.10.2; fixes are available in 2.9.3 and 2.10.2.
CVE-2026-75880: authenticated ActiveMQ Artemis clients can cause denial of service via crafted selector wildcard handling in affected versions.
An authenticated client can attach a consumer with a selector containing crafted wildcard usage, causing excessive evaluation during message delivery attempts that occupies a shared broker thread and leads to denial of service. Affected versions are Apache Artemis artemis-selector 2.50.0 through 2.56.0 and Apache ActiveMQ Artemis artemis-selector 1.0.0 through 2.44.0. Apache rates the issue moderate.
CVE-2026-67593: remote attackers can delete ActiveMQ Artemis queues via pre-authentication Openwire protocol handling in affected versions.
A remote attacker can exploit pre-authentication handling of the Openwire protocol to result in queue deletion on affected Apache Artemis and ActiveMQ Artemis brokers. Affected components include artemis-openwire-protocol and artemis-jakarta-openwire-protocol in Apache Artemis 2.50.0 through 2.56.0, and artemis-openwire-protocol 1.0.0 through 2.44.0 plus artemis-jakarta-openwire-protocol 2.32.0 through 2.44.0 in ActiveMQ Artemis. Apache rates the issue important.
CVE-2026-57967: unauthenticated attackers can hijack authenticated ActiveMQ Artemis sessions via crafted CORE protocol SESSION_REATTACH packets.
An unauthenticated remote attacker can craft a CORE protocol SESSION_REATTACH packet to steal an existing session and assume ongoing execution of the previously authenticated session on Apache Artemis and ActiveMQ Artemis. Affected versions are artemis-server 2.50.0 through 2.56.0 in Apache Artemis and artemis-server 1.0.0 through 2.44.0 in Apache ActiveMQ Artemis. Apache rates the issue important.
Apache fixed CVE-2026-57822, a deserialization flaw in ActiveMQ Artemis management messaging letting authorized clients trigger broker denial of service.
Apache disclosed a deserialization issue in message-based management request handling for Apache Artemis and Apache ActiveMQ Artemis. It affects Apache Artemis (artemis-core-client) 2.50.0 through 2.56.0 and ActiveMQ Artemis (artemis-core-client) 1.3.0 through 2.44.0. Exploitation requires an authenticated client authorized with MANAGE permission using management-via-messaging; parameter processing can trigger denial of service. Apache rates the issue as important.
Apache Artemis CVE-2026-49364 exposes cluster credentials to network-adjacent peers discovered before authentication completes.
Apache disclosed a pre-authentication credential exposure issue in Apache Artemis and Apache ActiveMQ Artemis, tracked as CVE-2026-49364. Affected components span artemis-core-client and artemis-server from version 1.0.0 (ActiveMQ Artemis) and 2.50.0 (Artemis) through 2.44.0 and 2.56.0 respectively. An unauthenticated network-adjacent attacker can leverage credentials exposed to discovered cluster peers. Apache rates the issue as important.
CVE-2026-49363 lets unauthenticated attackers subscribe to ActiveMQ Artemis CORE topology and harvest cluster node details pre-authentication.
An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request before authentication, tracked as CVE-2026-49363. The flaw affects artemis-server in Apache Artemis 2.50.0 through 2.56.0 and Apache ActiveMQ Artemis 1.0.0 through 2.44.0. Apache rates the issue as moderate; impact is limited to information disclosure of topology data.
CVE-2026-49362: unauthenticated attackers can create arbitrary durable queues in ActiveMQ Artemis via the CORE protocol, enabling denial of service.
A missing authentication check in the CORE protocol handler of Apache Artemis and Apache ActiveMQ Artemis, tracked as CVE-2026-49362, lets unauthenticated remote attackers create arbitrary durable queues. This enables unauthorized broker state manipulation and potential denial of service. Affected versions are artemis-server in Apache Artemis 2.50.0 through 2.56.0 and ActiveMQ Artemis 1.0.0 through 2.44.0. Apache rates the issue as important.
Sophos analyzed a Linux rootkit, tracked as PoisonedRefresh, on hacked F5 BIG-IP APM devices hiding an in-memory web shell linked to exploited CVE-2025-53521.
Sophos and ESET analyzed an implant (named PoisonedRefresh by ESET) deployed on compromised F5 BIG-IP APM appliances, which serves enterprise, financial, government, and public sector deployments. The second-stage payload intercepts __libc_start_main, hooks Apache's APR module loader (apr_dso_load), RC4-encodes key strings, and rewrites PHP file reads in memory to embed a web shell inside legitimate scripts like apm_css.php3, full_wt.php3, and webtop_popup_css.php3, leaving on-disk files unchanged. A related installer component infects /usr/sbin/httpd, persists across BIG-IP upgrade images, modifies SELinux configuration, and deploys the payload. The malware also creates a Unix domain socket at /run/bigtlog.pipe that hands authenticated local connections to /bin/bash; F5 links the activity to CVE-2025-53521, an unauthenticated RCE in BIG-IP APM already exploited in the wild.
Google GTIG reports threat actors using agentic AI to automate reconnaissance, exploit selection, and credential harvesting, compromising thousands of secrets.
Google Threat Intelligence Group's Q3 2026 AI Threat Tracker documents threat actors operationalizing agentic AI: in one Mandiant investigation, a financially motivated actor built and executed a credential-harvesting operation in under six hours, with an exposed 'Recon' framework managing more than 23,800 harvested secrets including cloud and AI-service API keys. A Chinese-speaking actor tracked as knaithe used a DeepSeek-powered Hermes Agent for automated reconnaissance and vulnerability enumeration, pivoting from Langflow to n8n and enabling manual exploitation of exposed Citrix NetScaler, Marimo, Apache Tomcat, and VPN infrastructure. Operators harvested Citrix session cookies from process memory to bypass MFA, obtained AWS credentials from compromised Marimo instances, and deployed the Go-based NKAbuse backdoor, with reported RCE and data exfiltration. Google notes fully autonomous end-to-end AI attack pipelines have not yet been observed in the wild.
Apache Impala CVE-2026-65181 allows remote code execution through class loading of external data sources; rated important by Apache.
Apache disclosed CVE-2026-65181, a remote code execution vulnerability in Apache Impala triggered via class loading of external data sources. The Apache Software Foundation rated the issue 'important'. The disclosure was posted to the oss-security mailing list on September 8, 2026.
Apache Impala CVE-2026-57866 lets authenticated users abuse ai_generate_text() to exfiltrate secrets from configured Hadoop credential providers via SSRF.
A server-side request forgery affects Apache Impala versions 4.4.0 through 4.5.1. Authenticated users with permission to execute the ai_generate_text() function can exfiltrate secrets provided by credential providers configured via hadoop.security.credential.provider.path in core-site.xml. The attacker must know the secret's key name, and Apache rates the issue 'important'.
Apache Impala CVE-2026-56207 allows forged SAML bearer tokens on the hs2-http interface, letting attackers impersonate other users; fixed in 4.5.2.
Apache Impala versions 4.0.0 through 4.5.1 fail to verify the bearer token signature in the final step of SAML2 authentication for the hs2-http interface. An attacker can alter the username and act as another user. Users are recommended to upgrade to version 4.5.2, and Apache rated the issue critical. It was reported by Andrew Rukin of Arenadata.
Apache Impala CVE-2026-54048 lets crafted Avro schema URLs trigger SSRF to internal endpoints, with responses potentially leaking via error messages.
A server-side request forgery in Apache Impala 2.0.0 through 4.5.1 on all platforms can be triggered via an Avro schema URL using an http or file:/// URI on a table. An attacker can cause Impala to send GET requests to internal endpoints it can access, and responses may be exposed through parsing error messages. Users are advised to upgrade to a fixed release.
Apache Airflow FAB provider flaw (CVE-2026-75156) lets attackers bypass Azure AD OAuth token validation via unvalidated issuer and audience claims.
Apache Airflow FAB provider versions 3.7.3 through 3.8.0 do not validate the issuer or audience of Azure AD id_tokens during OAuth login, enabling cross-tenant authentication bypass. The issue affects deployments where the FAB auth manager is configured with Azure AD as an OAuth provider. A fix is available in version 3.8.1. Severity is rated moderate.
Apache Nutch CVE-2026-41869 (moderate) lets unauthenticated users force shutdown or interrupt jobs via the Nutch Server REST API; fixed in 1.23.
A missing authorization and improper resource shutdown flaw in the Nutch Server REST API allows unauthenticated users to force a shutdown or interrupt running jobs. Apache Nutch versions 1.10 through 1.22 are affected. Version 1.23 fixes the issue by removing the Nutch Server; where upgrading is not possible, administrators must restrict access to instances running Nutch Server.
Apache FreeMarker CVE-2026-84939 permits path traversal via a malformed locale in template loading; fixed in FreeMarker 2.3.35.
A path traversal vulnerability in Apache FreeMarker's template loading mechanism can be triggered when an attacker controls a malformed locale value. FreeMarker 2.2.0 through 2.3.34 are affected for both the org.freemarker:freemarker and freemarker-gae artifacts, while 2.3.35 is unaffected. No exploitation or CVSS details were included in the announcement.
FBI and Lumen disrupted QTFY's QScan and QTRouter botnet platforms used by Chinese state-sponsored hackers to conceal intrusions into U.S. agencies.
The U.S. DoJ announced court-authorized seizure of domains behind QScan and QTRouter, operated by the Chinese state-sponsored group QTFY and employed by Nanjing Xinjiuwei Network Technology Company. QTFY has been active since May 2018 and targeted NASA, the Federal Reserve, the Department of Energy, DoJ, HHS, NIH, the U.S. Senate, and academic institutions. QScan exploits vulnerable IoT devices, feeding them into QTRouter, an OpenWrt-based proxy obfuscation network likened to an operational relay box (ORB) that masks attack origins. The group exploited zero-days such as Ivanti CSA flaws CVE-2024-8190, CVE-2024-8963, and CVE-2024-9380, plus numerous N-days, and maintained persistence with RATs, web shells, and legitimate credentials.
FBI seizes China-linked QScan and QTRouter hacking platforms used by QTFY to obfuscate intrusions against US federal agencies.
The DOJ and FBI seized domains hard-coded into QScan and QTRouter, two platforms operated by China-based Nanjing Xinjiuwei Network Technology Company on behalf of state-sponsored group QTFY. QScan automatically infected thousands of IoT devices which were added to QTRouter, an obfuscation network routing malicious traffic through compromised and proxy devices outside China. Targets included NASA, the Federal Reserve, Departments of Energy, Justice, and HHS, NIH, and the US Senate, exploiting flaws in Fortinet SSL-VPN, Citrix ADC, Microsoft Exchange, F5 BIG-IP, Log4j, and others.
Unit 42 confirmed in-the-wild exploitation of CVE-2019-19781, a critical Citrix ADC/Gateway directory traversal flaw enabling unauthenticated file access and RCE.
CVE-2019-19781, a CVSS 9.8 directory traversal vulnerability, affects all supported versions of Citrix ADC and Citrix Gateway. Unit 42 captured multiple exploitation attempts in the wild and identified scanning activity from roughly 700 Shodan-exposed hosts. The flaw stems from improper pathname handling in Apache, allowing unauthenticated attackers to read sensitive files like smb.conf or achieve remote code execution via crafted XML. Palo Alto Networks released Threat Prevention signatures 57497 and 57570 on January 7, 2020, while Citrix published advisories CTX267027 and CTX267679 with responder policy mitigations pending a late-January patch.
Apache Log4j 2 RCE CVE-2021-44228 is actively exploited via crafted JNDI lookups; Palo Alto Unit 42 urges upgrading to Log4j 2.17.1.
Unit 42 details CVE-2021-44228, an easily exploited remote code execution flaw in Apache Log4j 2 where attacker-supplied JNDI lookups in logged user input cause payload download and execution. Massive internet-wide scanning for unpatched systems has begun, with observed follow-on activity including information stealing, Cobalt Strike delivery, and coinmining. The recommended fix is Log4j 2.17.1, which also patches CVE-2021-45046, CVE-2021-45105, and CVE-2021-44832. Widely used Java software including Apache Struts, Solr, Druid, Flink, ElasticSearch, and Spring Boot is affected.
Attackers actively exploit Spring Framework RCE CVE-2022-22965 (SpringShell, CVSS 9.8) to deploy webshells; patches 5.3.18/5.2.20 shipped March 31, 2022.
CVE-2022-22965 enables unauthenticated remote code execution in the widely used Spring Framework (CVSS 9.8), which Unit 42 has observed being exploited in the wild. The flaw stems from getCachedIntrospectionResults exposing the class object during parameter binding, letting attackers manipulate the class loader to modify Tomcat logging and upload a JSP webshell. Public PoCs require JDK 9+, Tomcat, WAR packaging, and spring-webmvc or spring-webflux dependencies on Spring 5.3.0-5.3.17, 5.2.0-5.2.19, or older. Fixes shipped in Spring Framework 5.3.18 and 5.2.20; the related Spring Cloud Function flaw CVE-2022-22963 was patched March 29, 2022.
JNDI Injection Remote Code Execution in Apache Log4j2 (Log4Shell)
Apache Log4j2, an extremely widely used Java logging library, fails to protect its JNDI lookup feature against attacker-controlled JNDI-related endpoints (CWE-20, CWE-502), so crafted text processed by the logger causes the Java runtime to fetch and load attacker-supplied objects, leading to remote code execution. The flaw is triggered whenever attacker-controlled input reaches the logging API and is parsed for JNDI lookups, a pattern common in web servers and enterprise Java applications that log user-supplied fields such as headers or form values. Successful exploitation yields arbitrary code execution under the privileges of the affected application, giving attackers a foothold for lateral movement, data theft, and ransomware deployment. Any Java application or product that ships or bundles an affected Apache Log4j2 release is exposed, making this one of the most broadly deployed vulnerabilities ever disclosed. Exploitation is confirmed in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2021-12-10 with known ransomware use, and EPSS assigns a 100% probability of exploitation within 30 days.
Unauthenticated path traversal RCE in Citrix ADC, Gateway, and SD-WAN WANOP
CVE-2019-19781 is a path-traversal flaw (classified CWE-22, though CISA's description calls it unspecified) in Citrix ADC (formerly NetScaler ADC), Citrix Gateway, and Citrix SD-WAN WANOP appliances that lets an unauthenticated remote attacker traverse directories via crafted requests and execute arbitrary commands on the appliance, typically with root privileges. It is triggered by sending specially crafted directory-traversal requests (crafted URLs/requests to the appliance's management or VPN endpoints), which lets the attacker write files and run commands with no credentials. Successful exploitation yields arbitrary code execution on the appliance, enabling theft of VPN/ADC credentials, lateral movement into the corporate network, and installation of persistent backdoors. Any organization running affected ADC, Gateway, or SD-WAN WANOP firmware is affected, with internet-facing gateways used for remote access at the highest risk. Exploitation is confirmed in the wild: the vulnerability is on CISA's KEV (added 2021-11-03) with known ransomware use, EPSS assigns near-certain (100.0%) probability of exploitation within 30 days, and no public PoC is listed despite confirmed abuse.
· Citrix Application Delivery Controller (ADC) Supported ADC firmware lines in effect at disclosure (10.5, 11.0, 11.1, 12.0, 12.1, 13.0) prior to patched builds, per Citrix advisory CTX267020; exact builds n · Citrix Gateway Supported Gateway firmware lines (sharing the ADC codebase, same affected releases 10.5-13.0) prior to patched builds, per Citrix advisory; exact builds not spe KEV ransomwaremass
Unauthenticated Path Traversal in Ivanti Cloud Services Appliance
CVE-2024-8963 is a path traversal vulnerability (CWE-22) in the Ivanti Cloud Services Appliance (CSA), a virtual appliance used to remotely manage Ivanti Endpoint Manager environments. A remote, unauthenticated attacker can send crafted requests containing directory traversal sequences to reach restricted functionality without any credentials. Successful exploitation grants access to restricted (including administrative) functions on the appliance, and public reporting indicates it has been chained with other CSA zero-day flaws by nation-state attackers to infiltrate networks. All CSA 4.6.x releases before Patch 519 are affected, and the 4.6.x product line has reached end-of-life, meaning future 4.6.x vulnerabilities will not receive fixes. Exploitation is confirmed in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2024-09-19, and multiple outlets report Chinese-linked actors exploiting CSA zero-days against French government, telecom and other critical-infrastructure targets.
OS Command Injection RCE in Ivanti Cloud Services Appliance Admin Console
CVE-2024-9380 is an OS command injection flaw (CWE-77/CWE-78) in the admin web console of Ivanti Cloud Services Appliance (CSA), fixed in version 5.0.2. A remote attacker who is already authenticated with administrative privileges can inject arbitrary operating system commands through the console, which the appliance then executes. Successful exploitation yields remote code execution with high impact on confidentiality, integrity, and availability (CVSS 3.1: 7.2). All CSA releases before 5.0.2 are affected, and the widely deployed 4.6.x line has reached End-of-Life, so EOL users must remove it from service or move to 5.0.x or later. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2024-10-09, and contemporaneous reporting describes Chinese nation-state actors exploiting Ivanti CSA zero-days against French government and telecom targets, with a 63.2% EPSS probability of exploitation in the next 30 days (99th percentile).
· Ivanti Endpoint Manager Cloud Services Appliance (CSA) all versions before 5.0.2, including the End-of-Life 4.6.x line KEVmoderate
OS Command Injection RCE in Ivanti Cloud Services Appliance 4.6
Ivanti Cloud Services Appliance versions 4.6 Patch 518 and before contain an OS command injection flaw (CWE-78) that allows a remote, authenticated attacker to achieve remote code execution. The attacker must already hold administrator-level privileges on the appliance, and exploitation is triggered by sending crafted input to the appliance over the network. Successful exploitation yields arbitrary command execution on the CSA, and related reporting indicates nation-state actors have been exploiting Ivanti CSA flaws for network infiltration, including attacks on French government and telecom targets. Only organizations still running CSA 4.6.x are affected, and that product line has reached end-of-life and will not receive further security updates. The vulnerability was added to CISA's Known Exploited Vulnerabilities catalog on 2024-09-13 and carries a very high EPSS score (88.5%, 100th percentile), signaling confirmed and likely ongoing exploitation in the wild.
· Ivanti Cloud Services Appliance 4.6 through Patch 518 (versions 4.6 Patch 518 and before) KEVmoderate
ReDoS in Apache OpenNLP built-in EMAIL and URL regex name finders
CVE-2026-82617 is a regular-expression denial-of-service flaw (CWE-1333, inefficient regex complexity) in the two built-in name-finder patterns, EMAIL and URL, exposed by opennlp.tools.namefind.RegexNameFinderFactory in Apache OpenNLP. An application that obtains these finders via RegexNameFinderFactory.getDefaultRegexNameFinders(...) and applies them to untrusted text through RegexNameFinder.find(String[]) or find(String) can be driven into quadratic backtracking or unbounded matcher recursion by small crafted inputs: roughly 32 KB of text burns several seconds of CPU per EMAIL scan and returns no match, while roughly 4 KB of &-separated URL query tokens exhausts the thread stack and raises java.lang.StackOverflowError (about 1 KB suffices on worker threads with reduced stacks such as -Xss512k). Because no authentication or special configuration is needed, anyone who can control the text fed to these finders can convert each request into seconds to minutes of pinned CPU or abrupt thread death, denying service to the embedding application. Affected are applications embedding Apache OpenNLP 2.0.0 through 2.5.11 or 3.0.0-M1 through 3.0.0-M5 that have selected one of these two built-in finders; the flaw is specific to the built-in EMAIL/URL patterns and does not implicate model-based NER usage. There is no known exploitation, public proof-of-concept, or KEV listing as of now; fixed releases are 2.5.12 and 3.0.0-M6.
· Apache OpenNLP 2.0.0 through 2.5.11 · Apache OpenNLP 3.0.0-M1 through 3.0.0-M5—
In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially c
In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.
Pre-authentication queue deletion in Apache ActiveMQ Artemis via Openwire
CVE-2026-67593 is a missing-authentication flaw (CWE-306) in the Openwire protocol handling of the Apache ActiveMQ Artemis message broker. A remote attacker can send a crafted Openwire RemoveSubscriptionInfo command that causes deletion of a queue on the broker before the connection authentication and authorization stage, or at any time thereafter. Because the command is accepted without authentication, an attacker with network access to the broker's Openwire interface can disrupt messaging operations by deleting queues without any valid credentials. All ActiveMQ Artemis versions from 1.0.0 through 2.44.0 and Artemis versions from 2.50.0 through 2.56.0 are affected, which covers essentially the product's entire version history. No public proof-of-concept, CISA KEV listing, or in-the-wild exploitation is currently known; the issue is fixed in version 2.57.0.
· Apache Artemis 2.50.0 through 2.56.0 · Apache ActiveMQ Artemis 1.0.0 through 2.44.0large
Unauthenticated Queue Creation in Apache ActiveMQ Artemis CORE Protocol
CVE-2026-49362 is a missing-authentication flaw (CWE-306) in the CORE protocol handler of Apache ActiveMQ Artemis and Apache Artemis: the broker accepts CORE protocol commands without requiring any credentials. A remote attacker with network access to the broker's CORE acceptor (the default messaging port) can create arbitrary durable queues without authenticating, manipulating broker state without authorization. Because durable queues persist and consume broker resources, an attacker can repeatedly create queues to exhaust storage or memory and cause a denial of service; the queue creation itself also corrupts the intended broker configuration. All Apache ActiveMQ Artemis versions 1.0.0 through 2.44.0 and Apache Artemis versions 2.50.0 through 2.56.0 are affected. There is no CVSS score yet, no public proof-of-concept, and no known exploitation in the wild; the fix is available in version 2.57.0.
· Apache ActiveMQ Artemis 1.0.0 through 2.44.0 (inclusive) · Apache Artemis 2.50.0 through 2.56.0 (inclusive)large
Authenticated DoS via crafted wildcard message selectors in Apache ActiveMQ Artemis
Apache ActiveMQ Artemis fails to bound the evaluation cost of message selectors, so a selector with crafted wildcard usage can trigger excessive processing (CWE-1333) each time the broker attempts message delivery. An authenticated client triggers it by attaching a consumer whose selector contains the crafted wildcards, and each delivery attempt then occupies a shared broker thread for a disproportionate amount of time. By sustaining this load (with one or more such consumers), the attacker can tie up broker threads and stall or degrade message delivery for other clients, achieving denial of service with no privilege escalation or data exposure. All users running Apache Artemis 2.50.0 through 2.56.0 or Apache ActiveMQ Artemis 1.0.0 through 2.44.0 are affected, which in practice covers essentially every Artemis release before 2.57.0 across standalone and embedded broker deployments. The flaw has no CVSS score yet, no known public proof-of-concept, is not listed in CISA KEV, and there are no known reports of exploitation in the wild.
· Apache Artemis 2.50.0 through 2.56.0 · Apache ActiveMQ Artemis 1.0.0 through 2.44.0large
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