Medium severity5.4NVD Advisory· Published Aug 17, 2026· Updated Aug 17, 2026
CVE-2026-16044
CVE-2026-16044
Description
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <=11.7.6, <=10.11.21
Patches
Vulnerability mechanics
References
1News mentions
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