CVE-2026-11565: CWE-862 Missing Authorization in Advanced File Manager
The Advanced File Manager WordPress plugin before version 5.4.13 has a missing authorization vulnerability in several AJAX file management actions. This flaw allows users with roles as low as Subscriber, if granted file-manager access, to read arbitrary files on the server and overwrite existing non-PHP files. Exploitation can lead to compromise of administrator accounts and the entire site.
AI Analysis
Technical Summary
CVE-2026-11565 is a missing authorization vulnerability (CWE-862) in the Advanced File Manager WordPress plugin versions prior to 5.4.13. The plugin fails to perform proper capability checks in multiple AJAX file management actions, enabling users with minimal privileges but granted file-manager access to read sensitive server files and overwrite non-PHP files. This can be leveraged to escalate privileges and compromise the site and administrator accounts. The CVSS v3.1 score is 8.5 (High), reflecting network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges but high attack complexity.
Potential Impact
An attacker with any user role granted file-manager access (potentially as low as Subscriber) can read arbitrary files on the server, including sensitive configuration files, and overwrite existing non-PHP files. This can lead to full site compromise and takeover of administrator accounts.
Mitigation Recommendations
Upgrade the Advanced File Manager plugin to version 5.4.13 or later, where proper capability checks have been implemented to prevent unauthorized file access and modification. No other mitigation is indicated by the vendor advisory.
CVE-2026-11565: CWE-862 Missing Authorization in Advanced File Manager
Description
The Advanced File Manager WordPress plugin before version 5.4.13 has a missing authorization vulnerability in several AJAX file management actions. This flaw allows users with roles as low as Subscriber, if granted file-manager access, to read arbitrary files on the server and overwrite existing non-PHP files. Exploitation can lead to compromise of administrator accounts and the entire site.
CVSS v3.1
Score 8.5high
Affected software
Advanced File Manager
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-11565 is a missing authorization vulnerability (CWE-862) in the Advanced File Manager WordPress plugin versions prior to 5.4.13. The plugin fails to perform proper capability checks in multiple AJAX file management actions, enabling users with minimal privileges but granted file-manager access to read sensitive server files and overwrite non-PHP files. This can be leveraged to escalate privileges and compromise the site and administrator accounts. The CVSS v3.1 score is 8.5 (High), reflecting network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges but high attack complexity.
Potential Impact
An attacker with any user role granted file-manager access (potentially as low as Subscriber) can read arbitrary files on the server, including sensitive configuration files, and overwrite existing non-PHP files. This can lead to full site compromise and takeover of administrator accounts.
Mitigation Recommendations
Upgrade the Advanced File Manager plugin to version 5.4.13 or later, where proper capability checks have been implemented to prevent unauthorized file access and modification. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-08T08:25:50.611Z
- State
- PUBLISHED
Threat ID: 6a854e90c6e8be033248b237
Added to database: 08/19/2026, 06:34:56 UTC
Last enriched: 09/11/2026, 10:02:47 UTC
Last updated: 10/03/2026, 14:46:05 UTC
Views: 44
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.