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Vulnerabilities

Vulnerability · CVE-2026-107369

The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL.

Published Oct 13, 2026 · catalog updated Oct 14, 2026 · The auth0/nextjs-auth0 SDK validates

Check if you run it

No confirmed exploitation is on record for CVE-2026-107369. EPSS is 0.22%. Act only if a listed version of The auth0/nextjs-auth0 SDK validates is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The auth0/nextjs-auth0 SDK validates).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.22%
Remediation
Advisory link
Affected products
See sources for product scope

The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-107369

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-107369. EPSS is 0.22%. Act only if a listed version of The auth0/nextjs-auth0 SDK validates is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-601: URL Redirection to Untrusted Site (Open Redirect). EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2026 · Catalog

    Detected

    The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.

  2. Oct 14, 2026 · NIST NVD

    Updated

    The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or scheme-relative path, leading to a redirect to an unintended domain.

Sources

  • CVE.orgVulnerability recordCVE-2026-107369

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-107369

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-107369

    The auth0/nextjs-auth0 SDK validates that the returnTo parameter is a same-origin URL. The SDK then stores this value and, in a later step, reconstructs it for the post-authentication redirect. The reconstruction logic can produce a URL that browsers interpret as an absolute or s

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.