User Access Manager <= 2.3.15 - Unauthenticated Arbitrary File Read via 'uamgetfile' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
The User Access Manager plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.3.15 via the 'uamgetfile' parameter parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. This is possible because when attachment_url_to_postid() returns 0 for a traversal path, the plugin falls back to the global post set by a valid ?attachment_id parameter supplied by the attacker, causing the access check to pass against a legitimate public attachment while the file streamed is the attacker-chosen path.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18352
- 2026-10-03 Alias added: GHSA-mxw9-rxrv-85f3
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4e88efe0-ffad-4d66-bb03-3f3a9dcbe5b1?source=cve
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.14/src/UserAccessManager.php%3A512-516
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.14/src/Controller/BaseControllerTrait.php%3A22-50
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.14/src/Controller/Frontend/RedirectController.php%3A50-99%2C119-141%2C245-252
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.14/src/File/FileHandler.php%3A79-124%2C270-294
- https://plugins.trac.wordpress.org/changeset/3628895/user-access-manager
More gm_alex vulnerabilities
- TI-2026-12858 User Access Manager <= 2.3.12 - Authenticated (Subscriber+) SQL Injection CVSS 3.1MEDIUM 6.5
- TI-2026-16058 User Access Manager <= 2.3.18 - Reflected Cross-Site Scripting via 'tab_group_section' Parameter CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-18352 · CVE Program
- CVE-2026-18352 · NVD
- FIRST EPSS
- GHSA-mxw9-rxrv-85f3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences