CVE-2025-12756
Medium · 4.3Mattermost fails to validate user permissions when deleting comments in Boards
CVSS
4.3
EPSS
0.2%
Published
Dec 1, 2025
CISA due date
—
The record
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate user permissions when deleting comments in Boards, which allows an authenticated user with the editor role to delete comments created by other users.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/mattermost/mattermost | 0 | No fix |
| Go | github.com/mattermost/mattermost | 10.11.0 | No fix |
| Go | github.com/mattermost/mattermost | 10.11.0+incompatible | No fix |
| Go | github.com/mattermost/mattermost | 10.12.0 | No fix |
| Go | github.com/mattermost/mattermost | 10.12.0+incompatible | No fix |
| Go | github.com/mattermost/mattermost | 10.5.0 | No fix |
| Go | github.com/mattermost/mattermost | 10.5.0+incompatible | No fix |
| Go | github.com/mattermost/mattermost | 11.0.0 | No fix |
| Go | github.com/mattermost/mattermost-server | 0 | No fix |
| Go | github.com/mattermost/mattermost-server/v5 | 0 | No fix |
| Go | github.com/mattermost/mattermost-server/v6 | 0 | No fix |
| Go | github.com/mattermost/mattermost/server/v8 | 0 | No fix |
| SUSE:Linux Enterprise Module for Package Hub 15 SP6 | govulncheck-vulndb | 0 | 0.0.20251209T172047-150000.1.127.1 |
| go | github.com/mattermost/mattermost | 10.11.0 | No fix |
| go | github.com/mattermost/mattermost | 10.12.0 | No fix |
| go | github.com/mattermost/mattermost | 10.5.0 | No fix |
| go | github.com/mattermost/mattermost | 11.0.0 | No fix |
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0 | 0.0.20251209T172047-150000.1.127.1 |
Related vulnerabilities
- GO-2025-4172 Mattermost fails to validate user permissions when deleting comments in Boards in… Same vulnerability
- GO-2025-4248 Mattermost has missing redirect URL validation in github.com/mattermost/mattermost Also affects github.com/mattermost/mattermost
- GO-2025-4256 Mattermost has an Invite Token Replay Vulnerability via Channel Membership Manipulation… Also affects github.com/mattermost/mattermost
- GO-2025-4247 Mattermost GitHub Plugin Bot Identity Validation Bypass Allows Arbitrary GitHub Reaction… Also affects github.com/mattermost/mattermost
- CVE-2025-13324 Mattermost has an Invite Token Replay Vulnerability via Channel Membership Manipulation Also affects github.com/mattermost/mattermost
- CVE-2025-13352 Mattermost GitHub Plugin Bot Identity Validation Bypass Allows Arbitrary GitHub Reaction… Also affects github.com/mattermost/mattermost
- CVE-2025-62690 Mattermost has missing redirect URL validation Also affects github.com/mattermost/mattermost
- GO-2025-4178 Mattermost fails to validate user permissions in Boards in… Also affects github.com/mattermost/mattermost