GHSA-q66g-q98c-q454
Mattermost has missing redirect URL validation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | >= 8.0.0-20250721062209-4952acea88ce, < 8.0.0-20251016131338-dad6bd7a1509 | 8.0.0-20251016131338-dad6bd7a1509 |
| Go | github.com/mattermost/mattermost | >= 10.11.0-rc1, < 10.11.5-0.20251016131338-dad6bd7a1509 | 10.11.5-0.20251016131338-dad6bd7a1509 |
| Go | github.com/mattermost/mattermost | >= 11.0.0-alpha.1, < 11.1.0 | 11.1.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.