CVE-2025-9072
Mattermost versions 10.10.x <= 10.10.1, 10.5.x <= 10.5.9, 10.9.x <= 10.9.4 fail to validate the redirect_to parameter, allowing an attacker to craft a malicious link that, once a user authenticates with their SAML provider, could post the user’s cookies to an attacker-controlled URL.
- CVSS 3.1
- 5.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)
- CWE
- CWE-601
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-69j8-prx2-vx98 | Go | github.com/mattermost/mattermost-server | >=10.10.0 <10.10.2 | 10.10.2 |
| GHSA-69j8-prx2-vx98 | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.10 | 10.5.10 |
| GHSA-69j8-prx2-vx98 | Go | github.com/mattermost/mattermost-server | >=10.9.0 <10.9.5 | 10.9.5 |
| GHSA-69j8-prx2-vx98 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250731063404-9eebaadf8f72 | 8.0.0-20250731063404-9eebaadf8f72 |
| GO-2025-3958 | Go | github.com/mattermost/mattermost-server | >=10.5.0+incompatible <10.5.10+incompatible >=10.9.0+incompatible <10.9.5+incompatible >=10.10.0+incompatible <10.10.2+incompatible | 10.5.10+incompatible, 10.9.5+incompatible, 10.10.2+incompatible |
| GO-2025-3958 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3958 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3958 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250731063404-9eebaadf8f72 | 8.0.0-20250731063404-9eebaadf8f72 |