CVE-2025-53971
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Channel and Team Membership APIs inadvertently allow loss of Member privileges.
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate authorization for team scheme role modifications which allows Team Admins to demote Team Members to Guests via the PUT /api/v4/teams/team-id/members/user-id/schemeRoles API endpoint.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Mattermost
- Vendor
- Mattermost
- Product
- Mattermost
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 10.5.0 | affected | semver | Unavailable | 10.5.8 | None listed |
| 9.11.0 | affected | semver | Unavailable | 9.11.17 | None listed |
| 10.10.0 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 10.5.9 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 9.11.18 | unaffected | Unavailable | Unavailable | Unavailable | None listed |