Anti-Spam by CleanTalk <= 6.89.1 - Unauthenticated Stored Cross-Site Scripting via 'user_email' Registration Parameter
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The Anti-Spam by CleanTalk plugin for WordPress is affected, specifically its user registration handling, which can allow malicious scripts to be stored on a site. The impact is cross-site scripting that can run in an administrator's browser when they review flagged users in the plugin's spam scan results.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
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.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- cleantalk CleanTalk Anti-Spam – Complete Spam Protection
through 6.89.1
References 6
plugins.trac.wordpress.org
- browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/ListTable/BadUsers.php#L87
- browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/ListTable/Users.php#L113
- browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/UsersChecker.php#L182
- browser/cleantalk-spam-protect/tags/6.89.1/inc/cleantalk-public-integrations.php#L882
- changeset?reponame=&old=3747972%40cleantalk-spam-protect&new=3747972%40cleantalk-spam-protect