CVE-2025-41436

Unauthorized access to archived channel content via threads interface

State: Published
Severity: 3.1 Low
Published: Nov 14, 2025
Updated: Nov 14, 2025
Reserved: Oct 15, 2025

Description

Mattermost versions <11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads

Scores

CVSS	Score	Vector	Source
3.1	3.1 Low	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N	Mattermost

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
MattermostMattermost	<11.0 through <11.0Affected 11.0.0Not affected

References

https://mattermost.com/security-updates

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