Mattermost Open Redirect vulnerability

GHSA-hm95-jx66-g2gh · CVE-2025-9084 · GO-2025-3960

Published Sep 15, 2025 · Modified Sep 17, 2025

Description

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.

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-9084
WEB https://github.com/mattermost/mattermost/commit/39bd251fe4f66b7e847fc6d653221886347ff160
PACKAGE https://github.com/mattermost/mattermost
WEB https://mattermost.com/security-updates

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