CVE-2025-4369

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.

Reserved 2025-05-05 | Published 2025-07-15 | Updated 2025-07-15 | Assigner Wordfence

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

*
affected

Timeline

2025-07-14:

Disclosed

Credits

Nabil Irawan finder

References

www.wordfence.com/...-5480-43f3-ad9f-ed3f0d577ebc?source=cve

wordpress.org/plugins/companion-auto-update/

plugins.trac.wordpress.org/...tags/3.9.2/admin/dashboard.php

plugins.trac.wordpress.org/changeset/3325878/

cve.org (CVE-2025-4369)

nvd.nist.gov (CVE-2025-4369)

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