CVE-2025-4128

published 2025-06-11

CVE-2025-4128: Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions…

medium 4.3 CVSS 3.1

AV N AC L PR L UI N S U C L I N A N

Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
github.com	mattermost_mattermost-server	>= 10.5.0 < 10.5.5	10.5.5
github.com	mattermost_mattermost-server	>= 10.5.0+incompatible < 10.5.5+incompatible	10.5.5+incompatible
github.com	mattermost_mattermost-server	>= 9.11.0 < 9.11.14	9.11.14
github.com	mattermost_mattermost-server	>= 9.11.0+incompatible < 9.11.14+incompatible	9.11.14+incompatible
github.com	mattermost_mattermost_server_v8	>= 0 < 8.0.0-20250422131222-701ddc896a10	8.0.0-20250422131222-701ddc896a10
mattermost	mattermost	10.5.0 – 10.5.4	—
mattermost	mattermost	9.11.0 – 9.11.13	—
mattermost	mattermost_server	>= 10.5.0 < 10.5.5	10.5.5
mattermost	mattermost_server	>= 9.11.0 < 9.11.14	9.11.14

CWE-863