LOWCVSS 3.8EPSS 0.3%

CVE-2026-8074

Mattermost doesn't enforce bot-specific permission checks on the user active status endpoint

Published: 2026-06-22
Modified: 2026-09-15
EPSS percentile: 25%
Aliases: GHSA-g5vr-6pgg-74qv
Sources: github-advisory

Summary

Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to enforce bot-specific permission checks on the user active status endpoint, which allows a User Manager with user management write access but no Integrations access to deactivate bot accounts via the PUT /api/v4/users/{id}/active API endpoint.. Mattermost Advisory ID: MMSA-2026-00667

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
Go	github.com/mattermost/mattermost-server	—	11.7.1, 10.11.18

Remediation: Upgrade to 11.7.1 or later.

References

https://github.com/advisories/GHSA-g5vr-6pgg-74qv

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.