Description
The Spam protection, Honeypot, Anti-Spam by CleanTalk plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content aria-label Placeholder in all versions up to, and including, 6.86 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is deliverable via unauthenticated comment submission and executes exclusively for non-logged-in visitors; if comment moderation is enabled, an approving moderator must first publish the comment before the script reaches other users.
References10
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/…
- plugins.trac.wordpress.org/changeset/3677388/cleantalk-spam-pro…
- plugins.trac.wordpress.org/changeset?old_path=%2Fcleantalk-spam…
Metrics
- CVSS 3.1
-
7.2
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 41 · as of 7 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.