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Vulnerability record · CVE-2024-10542 · published 26 November 2024

CVE-2024-10542: Cleantalk anti-spam missing authorization vulnerability

Cleantalk · Anti Spam

The Spam protection, Anti-Spam, FireWall by CleanTalk plugin for WordPress is vulnerable to unauthorized Arbitrary Plugin Installation due to an authorization bypass via reverse DNS spoofing on the checkWithoutToken function in all versions up to, and including, 6.43.2. This makes it possible for unauthenticated attackers to install and activate arbitrary plugins which can be leveraged to achieve remote code execution if another vulnerable plugin is installed and activated.

7.5 CVSS 3.1 High EPSS 15% · top 3.3% CWE-862 · Missing authorization
7.5CVSS 3.1 base score
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

The Spam protection, Anti-Spam, FireWall by CleanTalk plugin for WordPress is vulnerable to unauthorized Arbitrary Plugin Installation due to an authorization bypass via reverse DNS spoofing on the checkWithoutToken function in all versions up to, and including, 6.43.2. This makes it possible for unauthenticated attackers to install and activate arbitrary plugins which can be leveraged to achieve remote code execution if another vulnerable plugin is installed and activated.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.43.2/lib/Cleantalk/ApbctWP/RemoteCalls.php#L41 Product
https://plugins.trac.wordpress.org/changeset/3179819/cleantalk-spam-protect#file631 Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/d7eb5fad-bb62-4f0b-ad52-b16c3e442b62?source=cve Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-10542), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.