What is GHSA-mq4h-r45f-27gp?

GHSA-mq4h-r45f-27gp is a security advisory published by GitHub Security Advisories with Medium severity. Improper link resolution before file access ('link following') in Windows Container Isolation FS...

Which CVE IDs does GHSA-mq4h-r45f-27gp cover?

GHSA-mq4h-r45f-27gp covers the following CVE IDs: CVE-2026-72971. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mq4h-r45f-27gp?

GHSA-mq4h-r45f-27gp has a CVSS v3 base score of 5.5, published by GitHub Security Advisories.

GHSA-mq4h-r45f-27gpMediumCVSS 5.5

Improper link resolution before file access ('link following') in Windows Container Isolation FS...

Vendor

GitHub Security Advisories

Published

August 11, 2026

Last Modified

August 11, 2026

🔗 CVE IDs covered (1)

CVE-2026-72971 →

📋 Description

Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-72971
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72971
https://github.com/advisories/GHSA-mq4h-r45f-27gp