Mattermost Open Redirect vulnerability
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-9072US | medium5.4 | — | ||
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 u… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/mattermost/mattermostPACKAGE
- https://github.com/mattermost/mattermost/commit/13cd76009d31754db46115bddef5287a8a29871aWEB
- https://github.com/mattermost/mattermost/commit/9eebaadf8f720788e99b6997337c8df330271326WEB
- https://github.com/mattermost/mattermost/commit/fda403fb6ec41bea8780bff198a26860f105e6e5WEB
- https://mattermost.com/security-updatesWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-9072ADVISORY
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