What is GHSA-ffpr-pfr4-g354?

GHSA-ffpr-pfr4-g354 is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost versions 11.6.x \u003c= 11.6.0, 11.5.x \u003c= 11.5.3, 11.4.x \u003c= 11.4.4, 10.11.x \u003c= 10.11.14...

Which CVE IDs does GHSA-ffpr-pfr4-g354 cover?

GHSA-ffpr-pfr4-g354 covers the following CVE IDs: CVE-2026-3636. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-ffpr-pfr4-g354?

GHSA-ffpr-pfr4-g354 has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

GHSA-ffpr-pfr4-g354MediumCVSS 4.3

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14...

Vendor

GitHub Security Advisories

Published

May 26, 2026

Last Modified

May 26, 2026

🔗 CVE IDs covered (1)

CVE-2026-3636 →

📋 Description

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to sanitize team member data when returned via API to users without elevated permissions which allows a user without permissions to get data about team members roles via invoking various team API endpoints.. Mattermost Advisory ID: MMSA-2026-00626

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-3636
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-ffpr-pfr4-g354