{"id":"CVE-2026-3117","title":"Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or setup webhook connections via the {{gitl…","summary":"Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or setup webhook connections via the {{gitl…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-862"],"vendor":"mattermost","product":"mattermost_server","affected":["mattermost_server >= 10.13.0, <= 10.13.11","mattermost_server >= 11.1.0, <= 11.1.5","mattermost_server >= 11.3.0, <= 11.3.4"],"published":"2026-05-18","updated":"2026-10-14","sourceUpdated":"2026-10-14T20:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-3117","references":[{"url":"https://mattermost.com/security-updates","label":"responsibledisclosure@mattermost.com"}],"tags":["nvd"],"epss":0.004,"epssPercentile":0.32564,"ingestedAt":"2026-10-14T20:53:12.298Z","slug":"CVE-2026-3117","body":"## Overview\n\nMattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or setup webhook connections via the {{gitlab instance {option}}} or the {{/gitlab webhook {option}}} commands. Mattermost Advisory ID: MMSA-2026-00600\n\n## Affected\n\n- `mattermost_server >= 10.13.0, <= 10.13.11`\n- `mattermost_server >= 11.1.0, <= 11.1.5`\n- `mattermost_server >= 11.3.0, <= 11.3.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}