CVE-2025-41443

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
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
MattermostCNA
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
VendorProductVersion
mattermostmattermost_server
10.5.0 ≤
𝑥
< 10.5.11
mattermostmattermost_server
10.11.0 ≤
𝑥
< 10.11.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://mattermost.com/security-updates