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CVE-2024-10542

Spam protection, Anti-Spam, FireWall by CleanTalk <= 6.43.2 - Authorization Bypass via Reverse DNS Spoofing to Unauthenticated Arbitrary Plugin Installation

Published: Nov 26, 2024Updated: Jul 12, 2025 Sources: CVE List NVD BDUCWE-862
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
15.2%
Top 3.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-862

Affected Products

anti-spamcleantalk
On-prem
Web & CMS Plugins / wordpress-plugin
Spam protectionСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
AntiSpamСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
FireWallСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
Spam protection, Honeypot, Anti-Spam by CleanTalkcleantalk
On-prem
Web & CMS Plugins / wordpress-plugin
cleantalkcommercialWeb & CMS Pluginsaka spam protection, antispam, firewall, anti-spam, login security, malware removal by cleantalk
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
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References

https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.43.2/lib/Cleantalk/ApbctWP/RemoteCalls.php#L41
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3179819/cleantalk-spam-protect#file631
plugins.trac.wordpress.org
https://www.wordfence.com/threat-intel/vulnerabilities/id/d7eb5fad-bb62-4f0b-ad52-b16c3e442b62?source=cve
wordfence.com
and 3 more references View all →

Timeline

Published
Nov 26, 2024
Last Updated
Jul 12, 2025

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