LOW 3.5 NVD

CVE-2026-9693

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, whi

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

References

https://mattermost.com/security-updates

Published: 2026-08-17 · Source: NVD · Feed updated: 2026-08-18

This low severity vulnerability with a CVSS score of 3.5 was published on 2026-08-17 via NVD.

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