What is GHSA-9vq4-jrpg-w3w2?

GHSA-9vq4-jrpg-w3w2 is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost versions 11.10.x \u003c= 11.10.0, 11.7.x \u003c= 11.7.9, 11.9.x \u003c= 11.9.1, 11.8.x \u003c= 11.8.5 fail...

Which CVE IDs does GHSA-9vq4-jrpg-w3w2 cover?

GHSA-9vq4-jrpg-w3w2 covers the following CVE IDs: CVE-2026-16251. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9vq4-jrpg-w3w2?

GHSA-9vq4-jrpg-w3w2 has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-9vq4-jrpg-w3w2MediumCVSS 6.5

Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail...

Vendor

GitHub Security Advisories

Published

October 16, 2026

Last Modified

October 16, 2026

🔗 CVE IDs covered (1)

CVE-2026-16251 →

📋 Description

Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to limit the size of remote image responses buffered in memory during local image proxy direct fetches, which allows a remote attacker to cause memory exhaustion on the server via a crafted oversized image response.. Mattermost Advisory ID: MMSA-2026-00726

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-16251
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-9vq4-jrpg-w3w2