Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.
{
    "github_reviewed_at": "2021-09-27T19:23:33Z",
    "severity": "MODERATE",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-79"
    ],
    "nvd_published_at": "2021-03-15T06:15:00Z"
}