6.4

CVE-2021-43812: auth0 nextjs-auth0 Open Redirect

CVSS: 6.4v3.1MediumModified
AliasesGHSA-2mqv-4j3r-vjvp
Published 16-12-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-43812 is a medium (CVSS 6.4) Open Redirect vulnerability in auth0 nextjs-auth0. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.68%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-12-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

+0.02 pp

From 0.66% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@auth01 product
  • nextjs-auth0< 1.6.2
Auth01 product

2 vendors · 2 products

References

4 links