Vulnerability Description
The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 2.10.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that a Pro license was previously active with REST caching enabled and has since become inactive while Disk Enhanced page caching remains configured, and that the attacker holds a previously approved commenter identity.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/BoldGrid/w3-total-cache/commit/7168b0d7cc80e827ad234a0428ab3e
- https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.10.7/Licensing_
- https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.10.7/PgCache_Co
- https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.10.7/PgCache_Co
- https://plugins.trac.wordpress.org/changeset/3757452/w3-total-cache/trunk/PgCach
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0169909e-c6cd-4d08-830
FAQ
What is CVE-2026-111254?
CVE-2026-111254 is a vulnerability with a CVSS score of 7.2 (HIGH). The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 2.10.7 due to insufficient input sanitization and...
How severe is CVE-2026-111254?
CVE-2026-111254 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-111254?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.