VulnerabilityAnalyzed

CVE-2025-64762

The AuthKit library for Next.js provides convenient helpers for authentication and session management using WorkOS & AuthKit with Next.js.

HIGH 8.0EPSS 0.37%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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: 8.0 HIGHCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.37% probability · 30th percentile
CISA KEV: Not listed
Weakness: CWE-524
Affected: workos/authkit-nextjs
Source: security-advisories@github.com

References

https://github.com/workos/authkit-nextjs/commit/94cf438124993abb0e7c19dac64c3cb5724a15eaPatch
https://github.com/workos/authkit-nextjs/releases/tag/v2.11.1Release Notes
https://github.com/workos/authkit-nextjs/security/advisories/GHSA-p8pf-44ff-93gfPatch, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.