CVE-2025-27571

Channel metadata visible in archived channels despite configuration setting

State: Published
Severity: 4.3 Medium
Published: Apr 16, 2025
Updated: Apr 16, 2025
Reserved: Apr 8, 2025

Description

Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	Mattermost

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
MattermostMattermost	10.5.0 through 10.5.1Affected 10.4.0 through 10.4.3Affected 9.11.0 through 9.11.9Affected 10.6.0Not affected 10.5.2Not affected 10.4.4Not affected 9.11.10Not affected

References

https://mattermost.com/security-updates

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