| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost | ≥ 10.11.0-rc1, < 10.11.5-0.20251016131338-dad6bd7a1509≥ 10.11.0-rc1+incompatible, < 11.1.0+incompatible≥ 11.0.0-alpha.1, < 11.1.0 | 10.11.5-0.20251016131338-dad6bd7a150911.1.0+incompatible11.1.0 |
| github.com/mattermost/mattermost-server | all versions | |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | ≥ 8.0.0-20250721062209-4952acea88ce, < 8.0.0-20251016131338-dad6bd7a1509 | 8.0.0-20251016131338-dad6bd7a1509 |
| mattermost server | ≥ 10.11.0, < 10.11.5 | 10.11.5 |
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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