Over 250 Magento Stores Hit Overnight as Hackers Exploit New Adobe Commerce Flaw
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2024-34102 | XXE vulnerability enabling RCE in Adobe Commerce and Magento Open Source CVE-2024-34102 is an improper restriction of XML external entity reference (XXE) vulnerability (CWE-611) in Adobe Commerce and Magento Open Source, where the platform does not properly restrict external entities when processing XML, so an attacker who can submit crafted XML containing external entity references can have it parsed with attacker-controlled resources. XXE flaws classically enable local file disclosure and server-side request forgery, and in this case Adobe states the flaw allows remote code execution on the affected server. Any organization running a vulnerable Adobe Commerce or Magento Open Source storefront is affected, and because these are internet-facing e-commerce platforms that routinely process XML input, exposure is likely to be broad. The vulnerability was added to CISA's Known Exploited Vulnerabilities catalog on 2024-07-17, confirming exploitation in the wild, and its EPSS score of ~100% (100th percentile) indicates near-certain near-term exploitation activity; no public proof-of-concept is known and CVSS has not yet been scored. CISA lists ransomware use as unknown, so a ransomware connection should not be assumed. Do: Apply Adobe's security updates for Adobe Commerce and Magento Open Source per the vendor's June 2024 advisory (APSB24-40), or, per the CISA KEV required action, apply vendor-recommended mitigations or discontinue use of the product if patches are unavailable. Review any endpoints or integrations that accept XML from untrusted users and hunt for signs of XXE exploitation, such as unexpected outbound requests, anomalous file reads, or webshell artifacts. Continue monitoring Adobe and CISA KEV for updated mitigation guidance and remediation deadlines. | 9.8 | 100% | KEV PoC |
| mass≈150,000+ storefronts (public technology scans report on the order of 100k-250k live Magento-based sites) | |
| CVE-2025-54236 | Unauthenticated Session Takeover in Adobe Commerce and Magento (SessionReaper) Adobe Commerce and Magento Open Source contain an improper input validation flaw (CWE-20), widely tracked as 'SessionReaper', that lets a remote, unauthenticated attacker take over user sessions. The flaw is exploitable over the network with no privileges and no user interaction (CVSS 3.1 9.1, critical). A successful attacker hijacks legitimate customer or admin sessions, yielding high confidentiality and integrity impact; a public writeup additionally describes unauthenticated exploitation potentially reaching code execution. Anyone running Adobe Commerce (including Commerce B2B) or Magento Open Source on the affected 2.4.x releases is exposed. Exploitation is confirmed in the wild: CISA added the flaw to its KEV catalog on 2025-10-24, reporting headlines cite over 250 observed attacks, EPSS is 94.5%, and roughly 3 in 5 stores were reported as still unpatched. Do: Immediately upgrade every affected 2.4.x line to a release newer than 2.4.9-alpha2/2.4.8-p2/2.4.7-p7/2.4.6-p12/2.4.5-p14/2.4.4-p15 per Adobe's security advisory. Because the flaw is on CISA's KEV list, federal agencies must apply the vendor's mitigations (or BOD 22-01 cloud guidance) or discontinue use; other defenders should prioritize patching given 250+ observed attacks and 94.5% EPSS. Until patched, watch for indicators of session takeover — unexpected customer or admin sessions, unfamiliar admin accounts, and anomalous session activity — and review Adobe's advisory for interim mitigations. | 9.1 | 95% | KEV PoC |
| mass≈100,000+ internet-facing Adobe Commerce/Magento storefronts (order of magnitude 10^5) |
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Ravie LakshmananOct 23, 2025Data Breach / Vulnerability
E-commerce security company Sansec has warned that threat actors have begun to exploit a recently disclosed security vulnerability in Adobe Commerce and Magento Open Source platforms, with more than 250 attack attempts recorded against multiple stores over the past 24 hours.
The vulnerability in question is CVE-2025-54236 (CVSS score: 9.1), a critical improper input validation flaw that could be abused to take over customer accounts in Adobe Commerce through the Commerce REST API.
Also known as SessionReaper, it was addressed by Adobe last month. A security researcher who goes by the name Blaklis is credited with the discovery and responsible disclosure of CVE-2025-54236.
The Dutch company said that 62% of Magento stores remain vulnerable to the security flaw six weeks after public disclosure, urging website administrators to apply the patches as soon as possible before broader exploitation activity picks up. Adobe has since revised its advisory to confirm reports of in-the-wild exploitation of CVE-2025-54236.
The attacks have originated from the following IP addresses, with unknown threat actors leveraging the flaw to drop PHP webshells or probe phpinfo to extract PHP configuration information.
- 34.227.25[.]4
- 44.212.43[.]34
- 54.205.171[.]35
- 155.117.84[.]134
- 159.89.12[.]166
"PHP backdoors are uploaded via '/customer/address_file/upload' as a fake session," Sansec said.
The development comes as Searchlight Cyber published a detailed technical analysis of CVE-2025-54236, describing it as a nested deserialization flaw that enables remote code execution.
It's worth noting that CVE-2025-54236 is the second deserialization vulnerability impacting Adobe Commerce and Magento platforms in as many years. In July 2024, another critical flaw dubbed CosmicSting (CVE-2024-34102, CVSS score: 9.8) was subjected to widespread exploitation.
With proof-of-concept (PoC) exploits and additional specifics now entering public domains, it's imperative that users move quickly to apply the fixes.
Update
In an update shared on October 26, 2025, Sansec said "mass attacks have hit 49% of all stores" and that it estimates "16-18% of all Magento stores now have one or more backdoors injected."
Akamai, which also observed activity in the wild of CVE-2025-54236, said it detected more than 300 exploitation attempts against over 130 different hosts over a 48-hour time period starting on October 22, 2025, with the attacks originating from 11 unique IP addresses.
Some of the payloads deployed following the exploitation include PHP web shells that can be used to gain persistent access to the web server, and reconnaissance probes using phpinfo() and echo.
(The story was updated after publication on October 30, 2025, with additional insights from Sansec and Akamai.)
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