CVE-2025-9072
HIGH7.6EPSS 0.04%Mattermost Open Redirect vulnerability
Published: 9/15/2025Modified: 9/17/2025
Description
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.
Affected packages (6)
- Go/github.com/mattermost/mattermost-server>= 10.10.0, < 10.10.2
- 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
- Go/github.com/mattermost/mattermost-server/v5from 0
- Go/github.com/mattermost/mattermost-server/v6from 0
- Go/github.com/mattermost/mattermost/server/v8from 0, < 8.0.0-20250731063404-9eebaadf8f72
- Go/github.com/mattermost/mattermost/server/v8from 0, < 8.0.0-20250731063404-9eebaadf8f72
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L |
References (7)
- ADVISORYhttps://github.com/advisories/GHSA-69j8-prx2-vx98
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-9072
- PATCHhttps://github.com/mattermost/mattermost
- WEBhttps://github.com/mattermost/mattermost/commit/13cd76009d31754db46115bddef5287a8a29871a
- WEBhttps://github.com/mattermost/mattermost/commit/9eebaadf8f720788e99b6997337c8df330271326
- WEBhttps://github.com/mattermost/mattermost/commit/fda403fb6ec41bea8780bff198a26860f105e6e5
- WEBhttps://mattermost.com/security-updates