What is GHSA-w38r-xjmg-mmg7?

GHSA-w38r-xjmg-mmg7 is a security advisory published by GitHub Security Advisories with Medium severity. The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key...

Which CVE IDs does GHSA-w38r-xjmg-mmg7 cover?

GHSA-w38r-xjmg-mmg7 covers the following CVE IDs: CVE-2026-88997. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w38r-xjmg-mmg7?

GHSA-w38r-xjmg-mmg7 has a CVSS v3 base score of 6.8, published by GitHub Security Advisories.

GHSA-w38r-xjmg-mmg7MediumCVSS 6.8

The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key...

Vendor

GitHub Security Advisories

Published

September 23, 2026

Last Modified

September 23, 2026

🔗 CVE IDs covered (1)

CVE-2026-88997 →

📋 Description

The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key before outputting it into an inline event-handler attribute in an admin-facing meta box, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes in the session of a higher-privileged user who reviews the affected post.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-88997
https://wpscan.com/vulnerability/1699d3aa-29ca-4197-8e3b-0b03ecce751a
https://github.com/advisories/GHSA-w38r-xjmg-mmg7