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CVE-2026-1490

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: Th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:039ee152810a21be4a40a46e1fbb87fa9547a76ab46abe60196712f4e855e341
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Spam protection, Honeypot, Anti-Spam by CleanTalk","vendor":"cleantalk","versions":[{"lessThanOrEqual":"6.71","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-350","description":"CWE-350 Reliance on Reverse DNS Resolution for a Security-Critical Action","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/trunk/lib/Cleantalk/ApbctWP/RemoteCalls.php#L69"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/trunk/lib/Cleantalk/Common/Helper.php#L64"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/changeset/3454488/cleantalk-spam-protect#file473"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/references/3
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/cb603be6-4a12-49e1-b8cc-b2062eb97f16?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5215bc5be182dcad0d19b1e9b125738c86154b67887cdec15dbdaf6c5bf6ead6 · sha256:87ac509ba480f8fa… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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