Headline
GHSA-q66g-q98c-q454: Mattermost has missing redirect URL validation
Mattermost versions 10.11.x <= 10.11.4 fail to validate redirect URLs on the /error page, which allows an attacker to redirect a victim to a malicious site via a crafted link opened in a new tab.
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- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-62690
Mattermost has missing redirect URL validation
Low severity GitHub Reviewed Published Dec 17, 2025 to the GitHub Advisory Database • Updated Dec 18, 2025
Package
gomod github.com/mattermost/mattermost (Go)
Affected versions
>= 10.11.0-rc1, < 10.11.5-0.20251016131338-dad6bd7a1509
>= 11.0.0-alpha.1, < 11.1.0
Patched versions
10.11.5-0.20251016131338-dad6bd7a1509
11.1.0
gomod github.com/mattermost/mattermost/server/v8 (Go)
>= 8.0.0-20250721062209-4952acea88ce, < 8.0.0-20251016131338-dad6bd7a1509
8.0.0-20251016131338-dad6bd7a1509
Description
Published to the GitHub Advisory Database
Dec 17, 2025
Last updated
Dec 18, 2025
EPSS score