CVE-2025-1412: Mattermost fails to invalidate all active sessions when converting a user to a bot

February 24, 2025

Mattermost versions 9.11.x <= 9.11.6, 10.4.x <= 10.4.1 fail to invalidate all active sessions when converting a user to a bot, with allows the converted user to escalate their privileges depending on the permissions granted to the bot.

References

github.com/advisories/GHSA-rhvr-6w8c-6v7w
github.com/mattermost/mattermost
github.com/mattermost/mattermost/commit/faa7e4f2ea0cca2fd2aba271912b9fc3be788842
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2025-1412

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