CVE-2025-41443 — Guest user can discover active public channels

CVE-2025-41443

Guest user can discover active public channels PUBLISHED

Description (CNA)

Mattermost versions 10.5.x <= 10.5.12, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the `/api/v4/teams/{team_id}/channels/ids` endpoint

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.5.0 through 10.5.12; affected 10.11.0 through 10.11.2; unaffected 10.12.0; unaffected 10.5.13; unaffected 10.11.3

CWE

CWE-862

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.