CVE-2025-14350
Published: Feb 16, 2026
Modified: Feb 17, 2026
CVSS v3.1
4.3
Description
Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563
| Vendor | Product | Versions |
|---|---|---|
Mattermost | Mattermost | affected 11.1.0 - <= 11.1.2affected 10.11.0 - <= 10.11.9affected 11.2.0 - <= 11.2.1unaffected 11.3.0unaffected 11.1.3+2 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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