CVE-2026-3115
Published: Mar 26, 2026
Modified: Mar 26, 2026
CVSS v3.1
4.3
Description
Mattermost versions 11.2.x <= 11.2.2, 10.11.x <= 10.11.10, 11.4.x <= 11.4.0, 11.3.x <= 11.3.1 fail to apply view restrictions when retrieving group member IDs, which allows authenticated guest users to enumerate user IDs outside their allowed visibility scope via the group retrieval endpoint.. Mattermost Advisory ID: MMSA-2026-00594
| Vendor | Product | Versions |
|---|---|---|
Mattermost | Mattermost | affected 11.2.0 - <= 11.2.2affected 10.11.0 - <= 10.11.10affected 11.4.0 - <= 11.4.0affected 11.3.0 - <= 11.3.1unaffected 11.5.0+4 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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