PT-2025-32421 · Workos · Authkit-React-Router

Marji-Workos · Published 2025-08-08 · Updated 2025-08-09 · CVE-2025-55008

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Name of the Vulnerable Software and Affected Versions @workos-inc/authkit-react-router versions 0.6.1 and below

Description The AuthKit library for React Router exposes sensitive authentication artifacts – specifically sealedSession and accessToken – by returning them from the authkitLoader, causing them to be rendered into the browser HTML. This information disclosure could lead to session hijacking in environments where cross-site scripting (XSS), malicious browser extensions, or local inspection is possible.

Recommendations Update to version 0.7.0 or later. In patched versions, sealedSession and accessToken are no longer returned by default from the authkitLoader. A secure server-side mechanism is provided to fetch an access token as needed.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2025-55008

GHSA-VQVC-9Q8X-VMQ6

Affected Products

Authkit-React-Router

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55008.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-55008 · Security Note
• https://osv.dev/vulnerability/GHSA-vqvc-9q8x-vmq6 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-55008 · Vendor Advisory
• https://github.com/workos/authkit-react-router/security/advisories/GHSA-vqvc-9q8x-vmq6 · Note
• https://github.com/workos/authkit-react-router/releases/tag/v0.7.0 · Note
• https://github.com/workos/authkit-react-router · Note
• https://github.com/workos/authkit-react-router/commit/607caac658784962bab76e227f9c5820d0b9a9e5 · Note
• https://twitter.com/CVEnew/status/1954014367965753522 · Twitter Post
• https://twitter.com/f8sbrightermind/status/1954044701318824085 · Twitter Post
• https://t.me/CVEtracker/29570 · Telegram Post