he 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.
No configuration.
18 Feb 2026, 17:52
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15 Feb 2026, 04:15
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Published : 2026-02-15 04:15
Updated : 2026-02-18 17:52
NVD link : CVE-2026-1490
Mitre link : CVE-2026-1490
CVE.ORG link : CVE-2026-1490
JSON object : View
No product.
Reliance on Reverse DNS Resolution for a Security-Critical Action