CVE-2026-20796
- Source
- https://cve.org/CVERecord?id=CVE-2026-20796
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-20796.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-20796
- Aliases
- Downstream
- Related
- Published
- 2026-02-13T11:16:10.280Z
- Modified
- 2026-03-04T22:29:06.578222Z
- Severity
-
- 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Mattermost versions 10.11.x <= 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /common_teams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549
- References
Affected packages
Git / github.com/mattermost/mattermost-server
Affected versions
@mattermost/client@10.*
@mattermost/client@10.11.0
@mattermost/types@10.*
@mattermost/types@10.11.0
mattermost-redux@10.*
mattermost-redux@10.11.0
v10.*
v10.11.0
v10.11.0-rc3
v10.11.1
v10.11.1-rc1
v10.11.2
v10.11.2-rc1
v10.11.2-rc2
v10.11.3
v10.11.4
v10.11.4-rc1
v10.11.4-rc2
v10.11.4-rc3
v10.11.5
v10.11.6
v10.11.7
v10.11.8
v10.11.9
v10.11.9-rc1