CVE-2026-9693
LOW
NVD
CVSS Score
3.5
Severity
LOW
Published
Aug 17, 2026
Vendor
unknown
Description
Mattermost versions 10.11.x <= 10.11.20, 11.7.x <= 11.7.5 Mattermost fails to remove thread membership records when a user is removed from or leaves a team, which allows a previously removed user who is later re-invited to the team to view private channel thread root post content and metadata via the team threads API.. Mattermost Advisory ID: MMSA-2026-00682