CVE-2026-1490 describes a critical authorization bypass vulnerability in the CleanTalk Spam protection, Anti-Spam, FireWall WordPress plugin, affecting all versions up to 6.71. This flaw allows unauthenticated attackers to install and activate arbitrary plugins by spoofing reverse DNS (PTR records) via the 'checkWithoutToken' function, potentially leading to remote code execution. The vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability, though it is only exploitable on sites with an invalid API key. While there is no evidence of active exploitation, nor publicly available Metasploit or Nuclei modules, the vulnerability has garnered significant community discussion with over 20 mentions, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Cleantalk | Spam Protection, Honeypot, Anti-Spam By CleanTalk | >= 0, <= 6.71CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.