CVE-2025-9891CWE-352csrf

CVE-2025-9891

Medium · published September 17, 2025

CVSS v3.1
4.3
EPSS
0%
Percentile
9.2
In the wild
Unconfirmed
What it is

The User Sync – Remote User Sync plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.2. This is due to missing or incorrect nonce validation on the mo_user_sync_form_handler() function. This makes it possible for unauthenticated attackers to deactivate the plugin via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00199 · 9.2th percentile
Weakness
CWE-352 · Cross-Site Request Forgery (CSRF)
Published
2025-09-17T06:15Z
References (3)
https://plugins.trac.wordpress.org/browser/user-sync/tags/1.0.1/mo-user-sync-main.php#L118 · [email protected]https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3360328%40user-sync&new=3360328%40user-sync&sfp_email=&sfph_mail= · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/6b60777e-6e07-42bd-9364-43367e209227?source=cve · [email protected]
EPSS history
Timeline
  • 17 SEP 01:53Z
    User Sync – Remote User Sync <= 1.0.2 - Cross-Site Request Forgery to Plugin Deactivation
    cvelistv5