What is GHSA-g3r4-5f4w-4vh4?

GHSA-g3r4-5f4w-4vh4 is a security advisory published by GitHub Security Advisories with High severity. Incorrect permission assignment for critical resource in M365 Copilot allows an authorized...

Which CVE IDs does GHSA-g3r4-5f4w-4vh4 cover?

GHSA-g3r4-5f4w-4vh4 covers the following CVE IDs: CVE-2026-85887. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-g3r4-5f4w-4vh4?

GHSA-g3r4-5f4w-4vh4 has a CVSS v3 base score of 7.7, published by GitHub Security Advisories.

GHSA-g3r4-5f4w-4vh4HighCVSS 7.7

Incorrect permission assignment for critical resource in M365 Copilot allows an authorized...

Vendor

GitHub Security Advisories

Published

September 18, 2026

Last Modified

September 18, 2026

🔗 CVE IDs covered (1)

CVE-2026-85887 →

📋 Description

Incorrect permission assignment for critical resource in M365 Copilot allows an authorized attacker to disclose information over a network.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-85887
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85887
https://github.com/advisories/GHSA-g3r4-5f4w-4vh4