CVE-2025-9084
Mattermost versions 10.5.x <= 10.5.9 fail to properly validate redirect URLs which allows attackers to redirect users to malicious sites via crafted OAuth login URLs
- CVSS 3.1
- 6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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-601
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hm95-jx66-g2gh | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-202508080704-39bd251fe4f600 | 8.0.0-202508080704-39bd251fe4f600 |
| GHSA-hm95-jx66-g2gh | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.10 | 10.5.10 |
| GO-2025-3960 | Go | github.com/mattermost/mattermost-server | >=10.5.0+incompatible <10.5.10+incompatible | 10.5.10+incompatible |
| GO-2025-3960 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3960 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3960 | Go | github.com/mattermost/mattermost/server/v8 | all versions | no fix published |