CVE-2026-1490

Summary

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 (PTR record) spoofing on the 'checkWithoutToken' function in all versions up to, and including, 6.71. 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. Note: This is only exploitable on sites with an invalid API key.

Affected Software

VendorProductVersion RangeStatus
cleantalkSpam protection, Honeypot, Anti-Spam by CleanTalk0 <= 6.71affected

Weaknesses

  • CWE-350: CWE-350 Reliance on Reverse DNS Resolution for a Security-Critical Action

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References