What is GHSA-5mh6-p63g-3mv5?

GHSA-5mh6-p63g-3mv5 is a security advisory published by GitHub Security Advisories with High severity. Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command

Which CVE IDs does GHSA-5mh6-p63g-3mv5 cover?

GHSA-5mh6-p63g-3mv5 covers the following CVE IDs: CVE-2018-21258. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5mh6-p63g-3mv5?

GHSA-5mh6-p63g-3mv5 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

Which products are affected by GHSA-5mh6-p63g-3mv5?

GHSA-5mh6-p63g-3mv5 affects 1 product, including: go/github.com/mattermost/mattermost-server:\u003c 5.1.0.

GHSA-5mh6-p63g-3mv5HighCVSS 7.5

Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command

Vendor

GitHub Security Advisories

Published

May 24, 2022

Last Modified

November 20, 2025

🔗 CVE IDs covered (1)

CVE-2018-21258 →

📋 Description

An issue was discovered in Mattermost Server before 5.1.0. It allows attackers to cause a denial of service via the invite_people slash command.

🎯 Affected products1

go/github.com/mattermost/mattermost-server:< 5.1.0

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2018-21258
https://github.com/mattermost/mattermost/commit/af615ffc24b774d76deef8c93282831432669dd8
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-5mh6-p63g-3mv5