CVE-2025-13352
Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.
- CVSS 3.1
- 3.0
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)
- CWE
- CWE-1287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-jf5h-xfw4-p8gp | Go | github.com/mattermost/mattermost/server/v8 | >=10.11.0-rc1 <10.11.7-0.20251106103514-3b05384dd014 | 10.11.7-0.20251106103514-3b05384dd014 |
| GHSA-jf5h-xfw4-p8gp | Go | github.com/mattermost/mattermost | <10.11.7-0.20251106103514-3b05384dd014 | 10.11.7-0.20251106103514-3b05384dd014 |
| GHSA-jf5h-xfw4-p8gp | Go | github.com/mattermost/mattermost | >=11.0.0-alpha.1 <11.1.0 | 11.1.0 |
| GHSA-jf5h-xfw4-p8gp | Go | github.com/mattermost/mattermost-plugin-github | <1.0.1-0.20250829075715-0deffcfc6bee | 1.0.1-0.20250829075715-0deffcfc6bee |
| GO-2025-4247 | Go | github.com/mattermost/mattermost | >=11.0.0-alpha.1+incompatible <11.1.0+incompatible | 11.1.0+incompatible |
| GO-2025-4247 | Go | github.com/mattermost/mattermost-plugin-github | <1.0.1-0.20250829075715-0deffcfc6bee | 1.0.1-0.20250829075715-0deffcfc6bee |
| GO-2025-4247 | Go | github.com/mattermost/mattermost-server | >=10.11.0-rc1+incompatible | no fix published |
| GO-2025-4247 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-4247 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-4247 | Go | github.com/mattermost/mattermost/server/v8 | all versions | no fix published |