CVE-2026-1629
Permalink Preview Information Disclosure After Permission Revocation
Summary
Permalink Preview Information Disclosure After Permission Revocation
Original description
The description as published by the source.
Mattermost versions 10.11.x <= 10.11.10 Fail to invalidate cached permalink preview data when a user loses channel access which allows the user to continue viewing private channel content via previously cached permalink previews until cache reset or relogin.. Mattermost Advisory ID: MMSA-2026-00580
References
- advisory github.com
- advisory mattermost.com
- advisory nvd.nist.gov