CVE-2024-10542: critical vulnerability in cleantalk Spam protection, Honeypot, Anti-Spam…
Spam protection, Anti-Spam, FireWall by CleanTalk <= 6.43.2 - Authorization Bypass via Reverse DNS Spoofing to Unauthenticated Arbitrary Plugin Installation
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
53Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.8epss 15%
from disclosure to weaponsame day
Published on NVDNov 26
1st PoCNov 26
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:H/I:H/A:H
Affected products
cleantalk · Spam protection, Honeypot, Anti-Spam by CleanTalkpublic PoCs found — 1
githubgithub.com/ubaydev/CVE-2024-10542★ 3⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — cleantalk Spam protection, Honeypot, Anti-Spam…
In the same product, most dangerous first.
CVE-2024-10781HIGHSpam protection, Anti-Spam, FireWall by CleanTalk <= 6.44 - Authorization Bypass due to Missing Empty Value Check to Unauthenticated Arbitrary Plugin InstallationEPSS 3.7%CVE-2026-1490CRITICALSpam protection, Honeypot, Anti-Spam by CleanTalk <= 6.71 - Authorization Bypass via Reverse DNS (PTR record) Spoofing to Unauthenticated Arbitrary Plugin InstallationEPSS 1.3%CVE-2026-77830HIGHSpam protection, Honeypot, Anti-Spam by CleanTalk <= 6.86 - Unauthenticated Stored Cross-Site Scripting via Comment Content aria-label PlaceholderEPSS 0.5%
References
https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.43.2/lib/Cleantalk/ApbctWP/RemoteCalls.php#L41https://plugins.trac.wordpress.org/changeset/3179819/cleantalk-spam-protect#file631https://www.wordfence.com/threat-intel/vulnerabilities/id/d7eb5fad-bb62-4f0b-ad52-b16c3e442b62?source=cve