CVE-2025-48947
NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies
Description
**Overview** In Auth0 Next.js SDK versions 4.0.1 to 4.6.0, __session cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. **Am I Affected?** You are affected by this vulnerability if you meet the following preconditions: 1. Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, 2. Applications using CDN or edge caching that caches responses with the Set-Cookie header. 3. If the Cache-Control header is not properly set for sensitive responses. **Fix** Upgrade auth0/nextjs-auth0 to v4.6.1.
How to fix CVE-2025-48947
To remediate CVE-2025-48947, upgrade the affected package to a fixed version below.
- —upgrade to 4.6.1 or later
Is CVE-2025-48947 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 4.0.1, < 4.6.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |