CVE-2023-51535 MEDIUM

CVE-2023-51535: WordPress Spam protection, AntiSpam, FireWall by CleanTalk Plugin <= 6.20 is vulnerable to Cross Site Request Forgery (CSRF)

Vendor Сleantalk - Anti-Spam Protection
Product Spam protection, Anti-Spam, FireWall by CleanTalk
Weakness CWE-352 · CSRF
Published January 5, 2024
Last update April 28, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

CleanTalk Anti-Spam Protection versions up to 6.20 contain a cross-site request forgery (CSRF) vulnerability. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions within the plugin's settings. The vulnerability requires user interaction and does not expose sensitive data, but can modify plugin configuration.

What an attacker can do

03Attacker Capabilities

Trick a site admin into visiting a malicious page that changes CleanTalk plugin settings without their knowledge.

Potential impact on your site

04Site Impact

Plugin settings could be altered by attackers without your consent, potentially disabling spam protection or changing security rules.

Conditions required to exploit

05Prerequisites

Site admin must be logged in and visit an attacker-controlled webpage.

Key dates

06Disclosure timeline

January 5, 2024 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE