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Adobe has issued an emergency patch for CVE-2025-54236, a critical vulnerability dubbed SessionReaper affecting Adobe Commerce and Magento Open Source. The flaw allows unauthenticated attackers to take over customer accounts via the Commerce REST API and may enable remote code execution under certain conditions. No exploitation has been observed in the wild, but administrators are urged to apply the patch immediately due to the vulnerability's severity and potential for automated, large-scale abuse.
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Hackers have begun actively exploiting the critical SessionReaper vulnerability (CVE-2025-54236) in Adobe Commerce (Magento) platforms, with security firm Sansec detecting and blocking hundreds of real-world attack attempts. The flaw, which allows attackers to take control of account sessions via the Commerce REST API, remains unpatched in approximately 62% of Magento stores, leaving thousands of e-commerce sites exposed to remote code execution and account takeover attacks. Technical analyses and proof-of-concept exploit code have been published, further increasing the risk of mass exploitation. Adobe issued an emergency patch for SessionReaper six weeks prior to the observed attacks, but patch adoption has been slow. Attackers are leveraging PHP webshells and probes to exploit the vulnerability, with most attacks originating from a handful of IP addresses. Security experts warn that the public availability of exploit details and the high impact of the flaw make rapid patching and the activation of web application firewalls critical for all affected organizations.
Jun 29, 2026
A critical vulnerability in the Magento ecommerce platform, identified as CVE-2025-54236 and dubbed 'SessionReaper,' has been actively exploited in the wild. The flaw allows attackers to hijack user sessions and achieve unauthenticated remote code execution (RCE) on affected Magento installations. Security researchers observed a surge in exploitation attempts following the public release of a proof-of-concept (PoC) exploit, with attackers deploying web shells and conducting reconnaissance using classic PHP probes. Adobe released an emergency patch for the vulnerability, and organizations are urged to apply it immediately to mitigate risk. Magento's widespread use and history of critical vulnerabilities make this flaw particularly attractive to threat actors. Exploitation attempts have targeted over 130 hosts from multiple IP addresses within 48 hours of the PoC's publication. Web application firewalls, such as Akamai's Adaptive Security Engine, have been effective in mitigating some exploit attempts by default. The vulnerability's critical nature and active exploitation highlight the urgent need for patching and enhanced monitoring of Magento deployments.
Jun 29, 2026
Adobe released an out-of-band fix for **CVE-2025-54236**, a critical improper input validation flaw in **Adobe Commerce**, **Adobe Commerce B2B**, and **Magento Open Source** that allows unauthenticated attackers to take over user sessions through vulnerable session-handling and Web API components. The bug, dubbed **"SessionReaper"** by Sansec, carries a reported **CVSS 9.1** rating and can lead to account hijacking, exposure of customer data, fraudulent orders, administrative access, and in some scenarios potentially remote code execution. Affected releases span multiple 2.4.x branches, including versions from **2.4.4 through 2.4.7** and other listed builds and earlier releases. Security guidance escalated after reports said the flaw was being actively exploited in the wild and added to **CISA's Known Exploited Vulnerabilities** catalog. Adobe published remediation details in **APSB25-88** and shipped patched versions, while defenders were urged to apply the vendor fix immediately, verify patch status, review logs for anomalous session activity, tighten administrative access, and increase **WAF**, API, and **SIEM** monitoring. Advisories also warned that leaked hotfix details and unofficial fixes could accelerate attacker weaponization or create additional risk.
Jun 29, 2026