MEDIUM 5.4 NVD

CVE-2026-16044

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to prevent guest users from receiving Board Admin privileges during board archive import which al

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 fail to prevent guest users from receiving Board Admin privileges during board archive import which allows a board member to escalate a guest user to Board Admin via importing a crafted .boardarchive file. Mattermost Advisory ID: MMSA-2026-00672

References

https://mattermost.com/security-updates

Published: 2026-08-17 · Source: NVD · Feed updated: 2026-08-17

This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-08-17 via NVD.

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