Bug 2458652 (CVE-2026-28741) - CVE-2026-28741 mattermost: CSRF protection bypass allows updating a user's authentication method
Summary: CVE-2026-28741 mattermost: CSRF protection bypass allows updating a user's au...
Keywords:
Status: NEW
Alias: CVE-2026-28741
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2458722 2458723
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-15 11:01 UTC by OSIDB Bzimport
Modified: 2026-04-17 17:27 UTC (History)
0 users

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Description OSIDB Bzimport 2026-04-15 11:01:27 UTC 
Mattermost versions 10.11.x <= 10.11.12, 11.5.x <= 11.5.0, 11.4.x <= 11.4.2, 11.3.x <= 11.3.2 fail to validate CSRF tokens on an authentication endpoint which allows an attacker to update a user's authentication method via a CSRF attack by tricking a user into visiting a malicious page. Mattermost Advisory ID: MMSA-2026-00625
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