CVE-2026-77110: 
Adobe Commerce vulnerability analysis and mitigation

CVE-2026-77110 is a Path Traversal vulnerability (CWE-22) in Adobe Commerce, Adobe Commerce B2B, and Magento Open Source that allows an attacker with high privileges to access unauthorized files or directories outside intended restrictions, resulting in a security feature bypass. The vulnerability was published on September 8, 2026, and affects Adobe Commerce versions 2.4.4 through 2.4.9 (August 2026 releases), Adobe Commerce B2B versions 1.3.3 through 1.5.3 (August 2026 releases), and Magento Open Source versions 2.4.6 through 2.4.9 (August 2026 releases). It carries a CVSS v3.1 base score of 7.6 (High) with changed scope, reflecting potential integrity and limited availability impact (Adobe Advisory).

The vulnerability stems from improper limitation of a pathname to a restricted directory (CWE-22), where user-supplied input is not adequately sanitized before being used in file system operations, allowing path traversal sequences (e.g., ../) to escape the intended directory boundary. Exploitation requires network access and high-level privileges (e.g., an authenticated administrator account), but does not require user interaction. The changed scope indicator in the CVSS vector suggests that a successful exploit can affect resources beyond the vulnerable component itself. No public technical write-ups or proof-of-concept code have been identified at this time (Adobe Advisory).

A high-privileged attacker who successfully exploits this vulnerability can read or write files outside the application's intended directory restrictions, effectively bypassing file system security controls. The primary impact is a high integrity compromise — an attacker may be able to modify sensitive configuration files or other restricted resources — with a limited disruption to availability. Confidentiality impact is assessed as none per the CVSS scoring, though unauthorized file access could indirectly expose sensitive data depending on the files reachable via traversal (Adobe Advisory).

As of the publication date, there is no evidence of active in-the-wild exploitation or publicly available proof-of-concept code for CVE-2026-77110. The EPSS score is approximately 0.775%, indicating a low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Exploitation requires high privileges, which further limits the attack surface compared to unauthenticated vulnerabilities (Adobe Advisory).

Adobe has released patched versions for all affected product lines as part of the September 2026 security update (APSB26-138). Administrators should update Adobe Commerce and Magento Open Source to the September 2026 patch releases (2.4.4-2026-sep, 2.4.5-2026-sep, 2.4.6-2026-sep, 2.4.7-2026-sep, 2.4.8-2026-sep, 2.4.9-2026-sep) and Adobe Commerce B2B to the corresponding September 2026 patch releases (1.3.3-2026-sep, 1.3.4-2026-sep, 1.4.2-2026-sep, 1.5.2-2026-sep, 1.5.3-2026-sep). As interim measures, restrict administrative access to only authorized personnel, implement strict access controls on sensitive file system directories, and monitor for anomalous file access patterns originating from administrative accounts (Adobe Advisory).

The vulnerability was noted in aggregated security advisories from CIS and AusCERT following Adobe's September 2026 patch release. CIS published an advisory covering multiple Adobe product vulnerabilities patched in the same release cycle. No significant independent researcher commentary or social media discussion has been identified specific to this CVE (CIS Advisory, AusCERT).