GHSA-XQ8M-7C5P-C2R6 Auth0 Next.js SDK has Improper Proxy Cache Lookup

Description In affected versions of the Next.js SDK, simultaneous requests that trigger a nonce retry may cause the proxy cache fetcher to perform improper lookups for the token request results. Which Projects are Affected? Users are affected if they meet all of the following preconditions: -...

@smg-automotive/auth (>=8.2.3, <=9.0.2-support-next-16.2.1) potentially affected by CVE-2026-40155 via @auth0/nextjs-auth0 (>=4.12.1, <=4.17.1)

@auth0/nextjs-auth0 NPM version =4.12.1, =8.2.3, =9.0.2-support-next-16.2.1 Source cves: CVE-2026-40155 Source advisory: OSV:GHSA-XQ8M-7C5P-C2R6...

EUVD-2026-23537

Auth0 Next.js SDK has Improper Proxy Cache Lookup...

Auth0 Next.js SDK has Improper Proxy Cache Lookup

Description In affected versions of the Next.js SDK, simultaneous requests that trigger a nonce retry may cause the proxy cache fetcher to perform improper lookups for the token request results. Which Projects are Affected? Users are affected if they meet all of the following preconditions: -...

CVE-2026-40155

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...

Incorrect Authorization

Overview @auth0/nextjs-auth0 is a Next.js SDK for signing in with Auth0 Affected versions of this package are vulnerable to Incorrect Authorization in the proxy cache fetcher. An attacker can gain unauthorized access to sensitive information or perform actions with insufficient authorization by...

@smg-automotive/auth (>=8.2.3, <=9.0.2-support-next-16.2.1) potentially affected by CVE-2026-40155 via @auth0/nextjs-auth0 (>=4.12.1, <=4.17.1)

@auth0/nextjs-auth0 NPM version =4.12.1, =8.2.3, =9.0.2-support-next-16.2.1 Source cves: CVE-2026-40155 Source advisory: SNYK:JS-AUTH0NEXTJSAUTH0-16109571...

CVE-2026-40155

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...

CVE-2026-40155

The CVE concerns the Auth0 Next.js SDK. Affected versions: 4.12.0–4.17.1. Issue: when multiple simultaneous requests trigger a nonce retry, the proxy cache fetcher may perform improper lookups for token request results. Impact: affects projects using both the vulnerable SDK versions and the proxy...

CVE-2026-40155

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...

CVE-2026-40155 Auth0 Next.js SDK has Improper Proxy Cache Lookup

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...

CVE-2026-40155 Auth0 Next.js SDK has Improper Proxy Cache Lookup

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...

CVE-2026-40155 Auth0 Next.js SDK has Improper Proxy Cache Lookup

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...

OAuth Parameter Injection

Auth0 Next.js is vulnerable to OAuth Parameter Injection. The vulnerability is due to insufficient validation of the returnTo parameter, where attacker-controlled input can inject unintended OAuth query parameters into the authorization request, potentially resulting in tokens being issued with...

CVE-2025-67716

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request...

CVE-2025-67716

CVE-2025-67716 affects the Auth0/nextjs-auth0 SDK. Versions 4.9.0–4.12.1 contain an input-validation flaw in the returnTo parameter that can inject unintended OAuth query parameters into the authorization request, potentially causing tokens to be issued with unintended parameters. Remediation: up...

PT-2025-50563

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request...

CVE-2025-67490 Auth0 Next.js SDK has Improper Request Caching Lookup

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. When using versions 4.11.0 through 4.11.2 and 4.12.0, simultaneous requests on the same client may result in improper lookups in the TokenRequestCache for the request results. This issue is fixed in...

CVE-2025-67490 Auth0 Next.js SDK has Improper Request Caching Lookup

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. When using versions 4.11.0 through 4.11.2 and 4.12.0, simultaneous requests on the same client may result in improper lookups in the TokenRequestCache for the request results. This issue is fixed in...

@smg-automotive/auth (>=6.8.0-auth0-update-access-token-endpoint.1, <=8.3.0-lschuerch-FED-782-sync-tenant.7) potentially affected by CVE-2025-67716 via @auth0/nextjs-auth0 (>=4.9.0, <=4.12.1)

@auth0/nextjs-auth0 NPM version =4.9.0, =6.8.0-auth0-update-access-token-endpoint.1, =8.3.0-lschuerch-FED-782-sync-tenant.7 Source cves: CVE-2025-67716 Source advisory: SNYK:JS-AUTH0NEXTJSAUTH0-14361679...