What is GHSA-hw33-g6h4-vc78?

GHSA-hw33-g6h4-vc78 is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost versions \u003c=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics,...

Which CVE IDs does GHSA-hw33-g6h4-vc78 cover?

GHSA-hw33-g6h4-vc78 covers the following CVE IDs: CVE-2026-86348. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hw33-g6h4-vc78?

GHSA-hw33-g6h4-vc78 has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

GHSA-hw33-g6h4-vc78MediumCVSS 4.3

Mattermost versions <=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics,...

Vendor

GitHub Security Advisories

Published

September 14, 2026

Last Modified

September 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-86348 →

📋 Description

Mattermost versions <=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-86348
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-hw33-g6h4-vc78