CVE-2023-51696: WordPress Spam protection, AntiSpam, FireWall by CleanTalk Plugin <= 6.20 is vulnerable to Cross Site Request Forgery (CSRF)

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-29 · updated 2026-06-17
Weakness: CWE-352

Description

Cross-Site Request Forgery (CSRF) vulnerability in СleanTalk - Anti-Spam Protection Spam protection, Anti-Spam, FireWall by CleanTalk.This issue affects Spam protection, Anti-Spam, FireWall by CleanTalk: from n/a through 6.20.

Affected products

Drupal Anti-Spam by CleanTalk: before 6.21 — fixed in 6.21

How to fix

Upgrade to a fixed version: Drupal Anti-Spam by CleanTalk 6.21. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/vulnerability/cleantalk-spam-protect/wordpress-spam-protection-antispam-firewall-by-cleantalk-anti-spam-plugin-6-20-cross-site-request-forgery-csrf-vulnerability?_s_id=cve
https://patchstack.com/database/vulnerability/cleantalk-spam-protect/wordpress-spam-protection-antispam-firewall-by-cleantalk-anti-spam-plugin-6-20-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

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