Answer in brief
CVE-2026-109198 records a High severity (CVSS 7.2) vulnerability in Anti-Spam by CleanTalk <= 6.89.1 - Unauthenticated Stored Cross-Site Scripting via 'user_email' Registration Parameter. The current sources do not mark it as known exploited. The current feed maps cleantalk/CleanTalk Anti-Spam – Complete Spam Protection (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps cleantalk/CleanTalk Anti-Spam – Complete Spam Protection (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| cleantalk/CleanTalk Anti-Spam – Complete Spam Protectiongeneric | >=0 <=6.89.1 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
The Anti-Spam by CleanTalk – Spam Protection Without CAPTCHA plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'user_email' parameter in all versions up to, and including, 6.89.1 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. Successful exploitation requires user registration to be open on the site, and script execution is triggered when an Administrator subsequently runs the plugin's user-spam scan and views the resulting Non-checkable users or Spam users tab — the plugin's own documented workflow.
Quoted source text, attributed separately from HOL analysis.