CVE-2025-4369 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Reference

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

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.5