ORY Hydra before v1.0.0-rc.3+oryOS.9 has Reflected XSS via the oauth2/fallbacks/error error_hint parameter.
{
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-26T18:20:05Z",
"nvd_published_at": "2019-02-17T06:29:00Z",
"severity": "MODERATE"
}