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CVE-2026-26230 PUBLISHED CVSS 3.799999952316284 LOW

Mattermost versions 10.11.x <= 10.11.10 fail to properly validate permission requirements in the team member roles API endpoint which allows team administrators to demote members to guest role. Mattermost Advisory ID: MMSA-2025-00531

EPSS 0.03% · 9.2th percentile

Risk Scores

CVSS v3.1
3.799999952316284
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
EPSS Score
0.03%
9.2th percentile

Affected Products

VendorProductVersions
MattermostMattermost10.11.0, 11.4.0, 10.11.11
mattermostmattermost_server10.11.0, 10.11.0, 10.11.0

Timeline

References

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