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.
{
"nvd_published_at": "2025-12-17T13:15:58Z",
"cwe_ids": [
"CWE-601"
],
"github_reviewed_at": "2025-12-18T15:25:38Z",
"severity": "LOW",
"github_reviewed": true
}