In Gitea before 1.25.2, /api/v1/user has different responses for failed authentication depending on whether a username exists.
{
"nvd_published_at": "2026-01-01T05:16:03Z",
"cwe_ids": [
"CWE-204"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-02T15:52:49Z",
"severity": "MODERATE"
}