Feed/CVE-2026-3636
CVE-2026-3636MEDIUMCVSS 4.3

Mattermost doesn't sanitize team member data when returned via API to users without elevated permissions

Published May 26, 2026·Updated Jun 26, 2026

NVD Description

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to sanitize team member data when returned via API to users without elevated permissions which allows a user without permissions to get data about team members roles via invoking various team API endpoints. Mattermost Advisory ID: MMSA-2026-00626.

Affected Packages (1)

github.com/mattermost/mattermost-serverGO
Fixed in 11.6.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

View on NVD Search GitHub Search Google

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