VULNERABILITY INTELLIGENCE

CVE-2021-43812

CVSS score6.4 MEDIUM

EPSS probability0.68%

CISA KEVNot currently listed

Published2021-12-16

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

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.

Weakness classification

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Primary references

security-advisories@github.com — Patch, Third Party Advisory
security-advisories@github.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory