CVE-2025-41443 (GCVE-0-2025-41443)

Vulnerability from cvelistv5 – Published: 2025-10-16 08:10 – Updated: 2025-10-29 08:06
VLAI
Title
Guest user can discover active public channels
Summary
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
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-16 13:58 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Mattermost Mattermost Affected: 10.5.0 , ≤ 10.5.12 (semver)
Affected: 10.11.0 , ≤ 10.11.2 (semver)
Unaffected: 10.12.0
Unaffected: 10.5.13
Unaffected: 10.11.3
guessed Create a notification for this product.
Credits
lordwillmore
Show details on NVD website
To clipboard 

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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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