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CVE-2026-8071 CleanTalk CVE debrief

CVE-2026-8071 is a HIGH-severity vulnerability in the Anti-Spam by CleanTalk. Spam protection WordPress plugin before version 6.79. The plugin does not properly sanitize content within a custom shortcode used in its email-encoding feature, allowing unauthenticated attackers to inject arbitrary web scripts into approved comments that will execute when any user (including administrators) views the post. The vulnerability has a CVSS score of 8.8 and was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-8071).

Vendor
CleanTalk
Product
Anti-Spam by CleanTalk. Spam protection
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-10
Advisory published
2026-06-10
Advisory updated
2026-06-10

Who should care

Users of the Anti-Spam by CleanTalk. Spam protection WordPress plugin before version 6.79 should update to the latest version to prevent exploitation of this vulnerability.

Technical summary

The Anti-Spam by CleanTalk. Spam protection WordPress plugin before 6.79 does not properly sanitize content within a custom shortcode used in its email-encoding feature, allowing unauthenticated attackers to inject arbitrary web scripts into approved comments that will execute when any user (including administrators) views the post. The vulnerability has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H and is classified under CWE-79.

Defensive priority

HIGH

Recommended defensive actions

  • Update the Anti-Spam by CleanTalk. Spam protection WordPress plugin to version 6.79 or later.
  • Review and sanitize all user-input content within the plugin's email-encoding feature.

Evidence notes

The vulnerability was reported by [ref-4](https://wpscan.com/vulnerability/0d4635b5-2d79-4337-a1ad-6b8d02cfd64b/) and has a detailed description on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-8071).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-8071 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-8071

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-8071 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-8071

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.