{"id":"CVE-2025-55008","aliases":["GHSA-vqvc-9q8x-vmq6"],"url":"https://o3.security/vulnerability/CVE-2025-55008","summary":"AuthKit React Router: Sensitive auth data rendered in HTML","details":"In versions before `0.7.0`, `@workos-inc/authkit-react-router` exposed sensitive authentication artifacts — specifically `sealedSession` and `accessToken` by returning them from the `authkitLoader`. This caused them to be rendered into the browser HTML.\n\n### Impact\nThis information disclosure could lead to session hijacking in environments where cross-site scripting (XSS), malicious browser extensions, or local inspection is possible.\n \n### Patches\nPatched in [https://github.com/workos/authkit-react-router/releases/tag/v0.7.0](https://github.com/workos/authkit-react-router/releases/tag/v0.7.0)\n\nIn patched versions:\n- `sealedSession` and `accessToken` are no longer returned by default from the `authkitLoader`.\n- A secure server-side mechanism is provided to fetch an access token as needed.","published":"2025-08-09T02:02:14.950Z","modified":"2026-08-12T03:51:49.324579122Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L"},"epss":{"score":0.00373,"percentile":0.30918,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@workos-inc/authkit-react-router","fixedVersion":"0.7.0"}],"fix":{"url":"https://github.com/workos/authkit-react-router/commit/607caac658784962bab76e227f9c5820d0b9a9e5","label":"workos/authkit-react-router@607caac"},"references":[{"type":"WEB","url":"https://github.com/workos/authkit-react-router/releases/tag/v0.7.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55008.json"},{"type":"ADVISORY","url":"https://github.com/workos/authkit-react-router/security/advisories/GHSA-vqvc-9q8x-vmq6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55008"},{"type":"FIX","url":"https://github.com/workos/authkit-react-router/commit/607caac658784962bab76e227f9c5820d0b9a9e5"},{"type":"PACKAGE","url":"https://github.com/workos/authkit-react-router"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:49.324579122Z"}}