Bug 2448239 (CVE-2026-1629) - CVE-2026-1629 github.com/mattermost/mattermost-server/: Permalink Preview Information Disclosure After Permission Revocation
Summary: CVE-2026-1629 github.com/mattermost/mattermost-server/: Permalink Preview Inf...
Keywords:
Status: NEW
Alias: CVE-2026-1629
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2448274 2448275
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-16 21:03 UTC by OSIDB Bzimport
Modified: 2026-03-16 22:26 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-03-16 21:03:08 UTC 
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
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