CVE-2026-87920 W3 Total Cache WordPress Plugin - Stored XSS

W3 Total Cache WordPress plugin <= 2.10.6 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in comment content via output-buffer regex rewrite, letting unauthenticated attackers inject scripts, exploit requires 'Remove query strings from static resources' option enabled.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗