CVE-2025-27571 — Channel metadata visible in archived channels despite configuration setting

CVE-2025-27571

Channel metadata visible in archived channels despite configuration setting PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.5.0 through 10.5.1; affected 10.4.0 through 10.4.3; affected 9.11.0 through 9.11.9; unaffected 10.6.0; unaffected 10.5.2; unaffected 10.4.4; unaffected 9.11.10

CWE

CWE-863

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.