cve.bz

CVE-2021-43812

6.1 mediumEPSS 0.7%

Medium (6.1) in auth0 nextjs-auth0. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in @auth0/nextjs-auth0 1.6.2.

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions before 1.6.2 do not filter out certain returnTo parameter values from the login url, which expose the application to an open redirect vulnerability. Users are advised to upgrade as soon as possible. There are no known workarounds for this issue.

Severity

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE
CWE-601
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-2mqv-4j3r-vjvpnpm@auth0/nextjs-auth0<1.6.21.6.2

References

Check your stackJSON