CVE-2026-111254 W3 Total Cache WordPress Plugin - Stored XSS

W3 Total Cache WordPress plugin <= 2.10.7 contains a stored XSS caused by insufficient sanitization and escaping of the 'comment' parameter, letting unauthenticated attackers inject scripts executed by users, exploit requires prior Pro license with REST caching enabled and attacker having approved commenter identity.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published
31 October 2026
Updated
1 November 2026
Weakness
CWE-79

Vendor fix

Update to the latest version beyond 2.10.7.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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