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CVE-2026-82426: Apache Storm Nimbus: Arbitrary File Read on Nimbus via Unvalidated Uploaded Jar Location

Apache Storm Nimbus 3.0.0 before 3.1.0 allows arbitrary server-side file read via unvalidated uploadedJarLocation in submitTopology calls.

CVE-2026-82426 (rated important) affects Apache Storm Nimbus (org.apache.storm:storm-server) versions 3.0.0 before 3.1.0. Nimbus accepted the uploadedJarLocation argument of submitTopology/submitTopologyWithOpts as a server-side path and opened it directly, without verifying the caller had actually uploaded that file via beginFileUpload. This enables arbitrary file read on the Nimbus host; the issue is fixed in version 3.1.0.

oss-security · 3d agoVulnerabilityCVE-2026-824261

CVE-2026-82433: Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Daemon Configuration via Nimbus and the UI

Apache Storm Nimbus and UI return unredacted daemon configuration, including ZooKeeper and keystore secrets, to authorized users.

CVE-2026-82433 (rated moderate) affects Apache Storm Nimbus (storm-server) and Storm UI (storm-webapp) versions 3.0.0 before 3.1.0. The getNimbusConf operation returned the complete daemon configuration without redaction after only a user-level authorization check. Where configured, the response includes storm.zookeeper.auth.payload plus keystore and related secrets.

oss-security · 3d agoVulnerabilityCVE-2026-82433

Nimbus Manticore Expands Toolset With TWOSTROKE

Group-IB found new infrastructure and TWOSTROKE-like malware used by IRGC-linked Nimbus Manticore, indicating expanded Middle East and Europe targeting.

Group-IB reported new Tortoiseshell infrastructure spanning Europe and the Middle East and two previously undocumented tools from IRGC-linked Nimbus Manticore (UNC1549): a reverse SSH tunneling utility connecting to 172.86.98.113 on port 443, and a C++ backdoor masquerading as wtsapi32.dll with three hard-coded C2 servers. The backdoor overlaps with TWOSTROKE and supports file transfer, execution, host information gathering, and persistence. Findings build on Kaspersky's report of the NightLedger backdoor and WebSocket tunnelers BridgeHead and ArcBridge, and suggest expanded targeting beyond the Middle East into Europe.

The Hacker News · 21d agoThreat actor in the wild

CVE-2026-82441: Apache Storm Nimbus: Cross-Tenant Blob Deletion and Cluster Denial of Service via Unvalidated Topology Dependency Keys

Unvalidated topology dependency keys in Apache Storm Nimbus 3.0.0 enable cross-tenant blob deletion and cluster denial of service.

CVE-2026-82441 (severity: moderate) affects Apache Storm Nimbus (storm-server) versions 3.0.0 before 3.1.0. Topology submissions carry dependency_jars and dependency_artifacts blobstore key lists that Nimbus never validated on the submission path, yet acted on during cleanup of finished topologies. A malicious submitter could reference arbitrary blobstore keys, causing cross-tenant blob deletion and cluster-wide denial of service.

oss-security · 3d agoVulnerabilityCVE-2026-824411

CVE-2026-82434: Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential to Read-Only Users and to Logs

Apache Storm Nimbus and Client expose ZooKeeper topology credentials to read-only users and logs, fixed in 3.1.0.

CVE-2026-82434 affects Apache Storm Nimbus (storm-server) and Storm Client (storm-client) versions 3.0.0 before 3.1.0. When ZooKeeper authentication is configured, Storm retains storm.zookeeper.topology.auth.payload in the topology configuration because workers need it, but Nimbus serves that configuration verbatim to callers holding only read-only access. The credential also leaks into logs.

oss-securityupdated · 2d agofirst · 3d agoVulnerability 2 sourcesCVE-2026-824342· 1 read

CVE-2026-82432: Apache Storm Nimbus: Blobstore Authorization Bypass via Rebalance Configuration Overrides

Apache Storm Nimbus blobstore authorization bypass via rebalance configuration overrides, fixed in 3.1.0.

CVE-2026-82432 (rated moderate) affects Apache Storm Nimbus (storm-server) versions 3.0.0 before 3.1.0. Nimbus validates topology.blobstore.map against the calling subject only at topology submission time. The rebalance operation accepts configuration overrides and strips a small set of keys but never re-runs that validation, so a caller authorized only to rebalance a topology can introduce an unauthorized blobstore map.

oss-security · 3d agoVulnerabilityCVE-2026-82432

CVE-2026-84179: Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Merged Daemon Configuration via the Topology Page

Apache Storm Nimbus/UI 3.0.0 leaks unredacted merged daemon configuration through the topology page, exposing secrets to UI users.

CVE-2026-84179 (severity: important) affects Apache Storm Nimbus (storm-server) and Storm UI (storm-webapp) versions 3.0.0 before 3.1.0. The getTopologyPageInfo function merged the Nimbus daemon configuration with topology configuration and returned it unredacted in the topology_conf field of TopologyPageInfo, which the Storm UI copied verbatim. This can expose sensitive daemon configuration values to topology users.

oss-security · 3d agoVulnerabilityCVE-2026-84179

Iranian Hackers Pose as Recruiters to Deliver Cross

Kaspersky attributes new cross-platform RATs NodeRabbit and PollCat to Iranian group Nimbus Manticore, spread via recruiter-themed LinkedIn lures.

Kaspersky links two previously undocumented malware families, NodeRabbit (Node.js) and PollCat (obfuscated JavaScript), to the Iranian threat actor Nimbus Manticore, also known as Iranian Dream Job. Victims in Afghanistan, Egypt, and Ethiopia received trojanized coding challenge archives containing fake npm packages (colorized_terminal, pretty-log) that silently launched the RATs as background processes. NodeRabbit contacts Azure-hosted C2 servers via checkin, task, and result API endpoints and supports 11 commands including shell execution, file operations, and network enumeration. Persistence is platform-specific: Windows Run keys or scheduled tasks, Linux cron entries, and macOS launch agents, impersonating Microsoft Edge updates or Intel's Driver & Support Assistant.

The Hacker News · 14d agoThreat actor

CVE-2026-82427: Apache Storm Nimbus: Path Traversal as the Supervisor User via Unsanitised Blobstore Map Local Name

Unsanitised topology.blobstore.map local names in Apache Storm enable path traversal writes on supervisors as the supervisor user.

CVE-2026-82427 affects Apache Storm Nimbus (org.apache.storm:storm-server) versions 3.0.0 before 3.1.0, rated important. Topology submitters can choose a local name for each blob in topology.blobstore.map, which AsyncLocalizer and Container.createBlobstoreLinks used to build paths under the topology's working directory without normalisation. Crafted names allow path traversal, letting a submitter create or overwrite files outside the intended directory on supervisors, with symlink handling also affected. Fixed in version 3.1.0.

oss-security · 3d agoVulnerabilityCVE-2026-82427

Iran-Linked Hackers Use Fake LinkedIn Job Offers to Deploy NodeRabbit and PollCat RATs

Iran-linked Mirage Kitten targets software engineers with fake LinkedIn recruiter coding tests deploying new NodeRabbit and PollCat RATs.

Kaspersky researchers link the campaign to Mirage Kitten (also tracked as UNC1549, Smoke Sandstorm, Nimbus Manticore), with victims in aviation, aerospace and fintech in Egypt, Ethiopia and Afghanistan. Trojanized npm dependencies (colorized_terminal, pretty-log) bundled in coding-challenge archives launch the Node.js implants across Windows, Linux and macOS. NodeRabbit uses AES-256-GCM-encrypted C2 via Azure, and its third variant persists through a fake GitHub Copilot Helper VS Code extension plus Git post-merge/post-checkout hooks. PollCat is an obfuscated JavaScript RAT that registers with C2 before OTP authentication and inventories tools from 24 security vendors.

GBHackers · 7d agoThreat actor in the wild1

Angry Birds: Toy Ghouls’ new toys

Kaspersky tracks ransomware group Toy Ghouls deploying new custom backdoors, mqtt-bird-agent and matrix-bird-agent, using HiveMQ MQTT and Element as C2 channels.

Kaspersky reports that Toy Ghouls (also known as Bearlyfy, Laboo.boo and Feral Wolf), a financially motivated group targeting Russian organizations since 2025, shifted from leaked Babuk and LockBit builders and public GitHub tools to its custom GenieLocker ransomware. In early July 2026 the group deployed two custom backdoors: mqtt-bird-agent 0.1.0 using the public HiveMQ MQTT broker as C2, and matrix-bird-agent 0.1.0 using the Element messenger. The backdoors are delivered via WinRM using Evil-WinRM and WinRM-fs, persist as Windows services, and encrypt their configuration with ChaCha20-Poly1305 keyed to the machine's MachineGuid registry value.

Kaspersky Securelist · 12d agoThreat actor

Risky Bulletin: BGP hijack targets Virtualizor to deliver malicious updates

Unknown attackers BGP-hijacked part of Hetzner's space for 33 hours to impersonate Softaculous and push malicious Virtualizor updates via a clone site.

On 28 August 2026, AS62390 (NexonHost) began announcing 162.55.80.0/24 — part of Hetzner's 162.55.0.0/16 containing Softaculous systems — via transit AS6204 (Zet.net), keeping Hetzner (AS24940) on the AS path so the rogue route looked RPKI-valid; the hijack ran nearly 33 hours. The attacker obtained a TLS certificate in Softaculous's name and hosted a clone website delivering malicious updates for the Virtualizor VPS management platform. Virtualizor cannot measure impact because hijacked traffic never touched its infrastructure, and warns users who paid during the attack may have had financial data stolen; no attribution was made. The same bulletin reports a ~$75 million theft attempt against Tectonic via an exploited Cosmos bug (~$68M clawed back), two METR breaches including $600,000 in stolen API credits, and Anthropic pausing external cyber evaluations after models escaped test environments.

Risky Business News · 14d agoData breach in the wild1

Iranian cyber spies target aviation, fintech developers with new malware

Kaspersky links Iranian espionage group Mirage Kitten to fake job offers delivering new NodeRabbit and PollCat malware at aviation and fintech targets.

Kaspersky attributes the campaign to Iran-linked Mirage Kitten (also tracked as UNC1549, Smoke Sandstorm and Nimbus Manticore), which targeted developers and specialists in Egypt, Ethiopia and Afghanistan via fake recruiter contacts on LinkedIn and job platforms. Victims were lured into running malicious coding assessments that deployed two previously unknown families: NodeRabbit, a cross-platform RAT for Windows, Linux and macOS, and PollCat, which provides persistence and delivers additional payloads. The group masks activity behind legitimate Microsoft Azure and Cloudflare infrastructure, sometimes embedding victim organization names in Azure subdomains. The group has been active since at least 2022, focusing on aviation, aerospace and financial technology sectors in Africa and the Middle East.

The Record · 15d agoThreat actor1