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. This requires HTML Minify to be enabled with the default 'mfunc' entry present in the ignored-comment stems list, and exploitation depends on the attacker predicting the md5(time()) placeholder namespace by reading the server clock via the HTTP Date response header within the applicable time window.
Published: 2026-10-31
Score: 5.4 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 31 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Boldgrid
Boldgrid w3 Total Cache
Wordpress-extensions
Wordpress-extensions w3 Total Cache
Vendors & Products Boldgrid
Boldgrid w3 Total Cache
Wordpress-extensions
Wordpress-extensions w3 Total Cache

Sat, 31 Oct 2026 07:00:00 +0000

Type Values Removed Values Added
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. This requires HTML Minify to be enabled with the default 'mfunc' entry present in the ignored-comment stems list, and exploitation depends on the attacker predicting the md5(time()) placeholder namespace by reading the server clock via the HTTP Date response header within the applicable time window.
Title W3 Total Cache <= 2.10.7 - Unauthenticated Stored Cross-Site Scripting via Comment Content via Predictable Minify Placeholder
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Boldgrid W3 Total Cache
Wordpress-extensions W3 Total Cache
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-31T06:44:16.137Z

Reserved: 2026-10-30T18:04:06.025Z

Link: CVE-2026-120019

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-31T07:16:37.227

Modified: 2026-10-31T07:16:37.227

Link: CVE-2026-120019

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-31T09:00:13Z

Weaknesses
  • CWE-79

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