What is GHSA-mxq2-5jpg-7474?

GHSA-mxq2-5jpg-7474 is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost versions 11.7.x \u003c= 11.7.0, 11.6.x \u003c= 11.6.2, 11.5.x \u003c= 11.5.5, 10.11.x \u003c= 10.11.17...

Which CVE IDs does GHSA-mxq2-5jpg-7474 cover?

GHSA-mxq2-5jpg-7474 covers the following CVE IDs: CVE-2026-6062. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mxq2-5jpg-7474?

GHSA-mxq2-5jpg-7474 has a CVSS v3 base score of 6.4, published by GitHub Security Advisories.

GHSA-mxq2-5jpg-7474MediumCVSS 6.4

Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17...

Vendor

GitHub Security Advisories

Published

June 22, 2026

Last Modified

June 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-6062 →

📋 Description

Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 Fail to validate channel ownership of an existing subscription before applying edits which allows an authenticated attacker to hijack subscriptions from channels they have no access to via a crafted PUT request to the subscription edit endpoint.. Mattermost Advisory ID: MMSA-2026-00650

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-6062
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-mxq2-5jpg-7474