CVE-2026-18352 User Access Manager <= 2.3.15 - Unauthenticated Arbitrary File Read via 'uamgetfile' Parameter
Unauthenticated attackers can read arbitrary files on the server via a directory traversal flaw in the User Access Manager plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18352?
CVE-2026-18352 is a high-severity path traversal vulnerability in gm_alex User Access Manager, published on 1 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-18352?
How do I fix CVE-2026-18352?
No fix has been published for CVE-2026-18352 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-18352 being exploited?
There is no known exploitation of CVE-2026-18352 in the wild and no public exploit code.
Sources
Also known as GHSA-mxw9-rxrv-85f3.