CVE-2026-14909.8CriticalCWE-350

CVE-2026-1490: Spam protection, Honeypot, Anti-Spam by CleanTalk <= 6.71 - Authorization Bypass via Reverse DNS (PTR record) Spoofing to Unauthenticated Arbitrary Plugin Installation

cleantalk · Spam protection, Honeypot, Anti-Spam by CleanTalk

Affected: cleantalk Spam protection, Honeypot, Anti-Spam by CleanTalk · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.3%probability of exploitation in the next 30 days

70th percentile

050100

Higher than 70% of scored CVEs

9.8CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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 products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

cleantalk · Spam protection, Honeypot, Anti-Spam by CleanTalkup to and including 6.71

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Reliance on Reverse DNS Resolution for a Security-Critical Action · Authentication
Vendor: cleantalk
Published: February 2026
Band: Possible (1 to 10%), February 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-1490 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.