{"id":"CVE-2025-55009","aliases":["GHSA-v3gr-w9gf-23cx"],"url":"https://o3.security/vulnerability/CVE-2025-55009","summary":"AuthKit: Sensitive auth data rendered in HTML","details":"### Summary\n\nBefore `0.15.0`, `@workos-inc/authkit-remix` returned sensitive authentication artifacts from the `authkitLoader`, specifically `sealedSession` and `accessToken`. Because these values were returned from the loader, they were embedded into the server-rendered HTML and became readable by any script with access to the page’s DOM (e.g., in the presence of XSS or a malicious browser extension).\n\n*   **Impact:** Exposure of these secrets can lead to session hijacking and unauthorized API access.\n*   **Fix:** Version `0.15.0` changes the default behavior so the loader no longer returns `sealedSession`/`accessToken`. A secure server-side mechanism is provided to fetch an access token when needed.\n\n### Patches\n\nPatched in [v0.15.0](https://github.com/workos/authkit-remix/releases/tag/v0.15.0).","published":"2025-08-09T02:02:07.611Z","modified":"2026-10-28T02:30:38.073240737Z","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":0.30977,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@workos-inc/authkit-remix","fixedVersion":"0.15.0"}],"fix":{"url":"https://github.com/workos/authkit-remix/commit/20102afc74bf3dd5150a975a098067fb406b90b6","label":"workos/authkit-remix@20102af"},"references":[{"type":"WEB","url":"https://github.com/workos/authkit-remix/releases/tag/v0.15.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55009.json"},{"type":"ADVISORY","url":"https://github.com/workos/authkit-remix/security/advisories/GHSA-v3gr-w9gf-23cx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55009"},{"type":"FIX","url":"https://github.com/workos/authkit-remix/commit/20102afc74bf3dd5150a975a098067fb406b90b6"},{"type":"PACKAGE","url":"https://github.com/workos/authkit-remix"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2025-55009"},{"type":"WEB","url":"https://osv.dev/vulnerability/GHSA-v3gr-w9gf-23cx"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:38.073240737Z"}}