CVE-2025-4369
The Companion Auto Update plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘update_delay_days’ parameter in all versions up to, and including, 3.9.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
- Score
- CVSS 3.1 5.5 Medium
- Status
- Deferred - security@wordfence.com
- Published
- 2025-07-15
- Last modified
- 2026-04-08
- Weaknesses
- CWE-79
Affected products
References
- https://plugins.trac.wordpress.org/browser/companion-auto-update/tags/3.9.2/admin/dashboard.php#L71
- https://plugins.trac.wordpress.org/changeset/3325878/
- https://wordpress.org/plugins/companion-auto-update/#developers
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b4c61072-5480-43f3-ad9f-ed3f0d577ebc?source=cve
