CVE-2026-40155
MEDIUMAuth0 Next.js SDK has Improper Proxy Cache Lookup
Title source: cnaDescription
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.
Scores
CVSS v3
5.4
EPSS
0.0004
EPSS Percentile
12.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N
Details
CWE
CWE-362
CWE-863
Status
published
Products (2)
auth0/nextjs-auth0
4.12.0 - 4.18.0npm
auth0/nextjs-auth0
>= 4.12.0, < 4.18.0
Published
Apr 17, 2026
Tracked Since
Apr 18, 2026