What is GHSA-7v3h-fv85-64q9?

GHSA-7v3h-fv85-64q9 is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost versions 11.9.x \u003c= 11.9.1, 11.8.x \u003c= 11.8.5, 11.7.x \u003c= 11.7.10, 11.10.x \u003c= 11.10.1...

Which CVE IDs does GHSA-7v3h-fv85-64q9 cover?

GHSA-7v3h-fv85-64q9 covers the following CVE IDs: CVE-2026-19541. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-7v3h-fv85-64q9?

GHSA-7v3h-fv85-64q9 has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-7v3h-fv85-64q9MediumCVSS 6.5

Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1...

Vendor

GitHub Security Advisories

Published

October 16, 2026

Last Modified

October 16, 2026

🔗 CVE IDs covered (1)

CVE-2026-19541 →

📋 Description

Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to require re-entry of the stored client secret when validating an outgoing OAuth connection, which allows an authenticated user with permission to manage outgoing OAuth connections to obtain the secret via pointing the token URL at an attacker-controlled endpoint and triggering validation.. Mattermost Advisory ID: MMSA-2026-00761

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-19541
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-7v3h-fv85-64q9