CVE-2025-48947

NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies

State: Published
Severity: 7.7 High
Published: Jun 4, 2025
Updated: Jun 4, 2025
Reserved: May 28, 2025

Description

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In Auth0 Next.js SDK versions 4.0.1 through 4.6.0, `__session` cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. Three preconditions must be met in order for someone to be affected by the vulnerability: Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, applications using CDN or edge caching that caches responses with the Set-Cookie header, and if the Cache-Control header is not properly set for sensitive responses. Users should upgrade auth0/nextjs-auth0 to v4.6.1 to receive a patch.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L	GitHub_M

Weaknesses

CWE-525 Use of Web Browser Cache Containing Sensitive Information

Affected Products

Product	Versions
nextjs-auth0auth0	>= 4.0.1, < 4.6.1Affected

References

https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-f3fg-mf2q-fj3f

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