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PatchSiren cyber security CVE debrief

CVE-2026-8940 jasonpitts CVE debrief

A Cross-Site Request Forgery (CSRF) vulnerability exists in the WP Meta Sort Posts plugin for WordPress, affecting all versions up to and including 0.9. This vulnerability is due to missing or incorrect nonce validation on the top-level included script in msp-options.php. An unauthenticated attacker can exploit this by tricking a site administrator into performing an action such as clicking on a link, allowing them to change the plugin's msp_loop_file and msp_nav_location settings via a forged request.

Vendor
jasonpitts
Product
WP Meta Sort Posts
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Users of the WP Meta Sort Posts plugin for WordPress, particularly those with versions up to and including 0.9, should be aware of this vulnerability and take necessary actions to protect their sites.

Technical summary

The vulnerability has a CVSS score of 4.3 and is classified as MEDIUM severity. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. The weakness is categorized under CWE-352.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update the WP Meta Sort Posts plugin to a version beyond 0.9, if available.
  • Implement additional security measures such as validating nonces for all requests that modify settings.

Evidence notes

Evidence for this vulnerability comes from the National Vulnerability Database (NVD) and Wordfence security research.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-8940 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-8940

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

  • CVE-2026-8940 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-8940

    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.