What is GHSA-8rm3-f79m-54wg?

GHSA-8rm3-f79m-54wg is a security advisory published by GitHub Security Advisories with Low severity. Mattermost versions 10.11.x \u003c= 10.11.18, 11.6.x \u003c= 11.6.3, 11.5.x \u003c= 11.5.6 fail to properly...

Which CVE IDs does GHSA-8rm3-f79m-54wg cover?

GHSA-8rm3-f79m-54wg covers the following CVE IDs: CVE-2026-3472. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-8rm3-f79m-54wg?

GHSA-8rm3-f79m-54wg has a CVSS v3 base score of 3.5, published by GitHub Security Advisories.

GHSA-8rm3-f79m-54wgLowCVSS 3.5

Mattermost versions 10.11.x <= 10.11.18, 11.6.x <= 11.6.3, 11.5.x <= 11.5.6 fail to properly...

Vendor

GitHub Security Advisories

Published

June 26, 2026

Last Modified

June 26, 2026

🔗 CVE IDs covered (1)

CVE-2026-3472 →

📋 Description

Mattermost versions 10.11.x <= 10.11.18, 11.6.x <= 11.6.3, 11.5.x <= 11.5.6 fail to properly apply markdown image rendering restrictions to AI bot tool result posts, which allows an authenticated attacker to exfiltrate data to an attacker-controlled server via injecting markdown image syntax into tool result content rendered by a victim's client.. Mattermost Advisory ID: MMSA-2026-00619

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-3472
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-8rm3-f79m-54wg