🛡️ CVE-2026-40155
🟡 CVSS 5.4 — Medium ✅ No Known Exploit CWE-362 NVD
5.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In versions 4.12.0 through 4.17.1, simultaneous requests that trigger a nonce retry may cause the proxy cache fetcher to perform improper lookups for the token request results. Users are affected if their project uses both the vulnerable versions and the proxy handler /me/* and /my-org/* with DPoP enabled. This issue has been fixed in version 4.18.0.

Details

Severity Medium
CVSS Score 5.4
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N
CWE CWE-362
Public Exploit ✅ No
Source NVD
Published 2026-04-21
Updated 2026-06-02
Modified 2026-04-21

Affected Packages

Software From version Fixed in
@auth0/nextjs-auth0
nextjs-auth0 4.12.0 4.18.0

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