CVE-2025-64762

The AuthKit library for Next.js provides convenient helpers for authentication and session management using WorkOS & AuthKit with Next.js. In authkit-nextjs version 2.11.0 and below, authenticated responses do not defensively apply anti-caching headers. In environments where CDN caching is enabled, this can result in session tokens being included in cached responses and subsequently served to multiple users. Next.js applications deployed on Vercel are unaffected unless they manually enable CDN caching by setting cache headers on authenticated paths. Patched in authkit-nextjs 2.11.1, which applies anti-caching headers to all responses behind authentication.

CVSS 4.0

8.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U

CVSS 3.1

9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-25)

CWE

CWE-524

Published

2025-11-21

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• workos:authkit-nextjs

Packages (OSV)

References

• https://github.com/workos/authkit-nextjs/commit/94cf438124993abb0e7c19dac64c3cb5724a15ea
• https://github.com/workos/authkit-nextjs/releases/tag/v2.11.1
• https://github.com/workos/authkit-nextjs/security/advisories/GHSA-p8pf-44ff-93gf

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