Open Redirect

Overview @auth0/nextjs-auth0 is a Next.js SDK for signing in with Auth0 Affected versions of this package are vulnerable to Open Redirect via the returnTo parameter, where the SDK validates it as a same-origin URL but the subsequent reconstruction logic can produce a URL that browsers interpret a...

@smg-automotive/auth (>=6.8.0-auth0-update-access-token-endpoint.1, <=9.3.5) potentially affected by CVE-2026-107369 via @auth0/nextjs-auth0 (>=4.9.0, <=4.25.0)

@auth0/nextjs-auth0 NPM version =4.9.0, =6.8.0-auth0-update-access-token-endpoint.1, =9.3.5 Source cves: CVE-2026-107369 Source advisory: SNYK:JS-AUTH0NEXTJSAUTH0-20936946...

CVE-2026-107369

The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative...

EUVD-2026-100481

The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative...

CVE-2026-107369

The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative...

CVE-2026-107369: URL Redirection to Untrusted Site

The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative...

PT-2026-113365

🚨 CVE-2026-107369 The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or...

@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...

@smg-automotive/auth (>=8.2.3, <=9.0.1) potentially affected by CVE-2026-40155 via @auth0/nextjs-auth0 (>=4.12.1, <=4.17.0)

@auth0/nextjs-auth0 NPM version =4.12.1, =8.2.3, =9.0.1 Source cves: CVE-2026-40155 Source advisory: 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: -...

EUVD-2026-23537

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

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: -...

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...

@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...

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...

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

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...

@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: MEND:CVE-2026-40155...