CVE-2025-48947: high-severity vulnerability in auth0 nextjs-auth0
NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.4%
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.
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
Affected products
auth0 · nextjs-auth0Related CVEs — auth0 nextjs-auth0
In the same product, most dangerous first.
CVE-2021-32702HIGHReflected XSS from the callback handler's error query parameterEPSS 1.4%CVE-2021-43812MEDIUMOpen redirect in nextjs-auth0EPSS 0.7%CVE-2025-46344MEDIUMAuth0 NextJS SDK v4 Missing Session InvalidationEPSS 0.4%CVE-2025-67716MEDIUMAuth0 Next.js SDK has Improper Validation of Query ParametersEPSS 0.3%CVE-2026-40155MEDIUMAuth0 Next.js SDK has Improper Proxy Cache LookupEPSS 0.2%CVE-2025-67490MEDIUMAuth0 Next.js SDK has Improper Request Caching LookupEPSS 0.2%