Is CVE-2026-107369 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-107369 being exploited in the wild.

How severe is CVE-2026-107369?

Medium severity, with a CVSS score of 6.1, published 13 October 2026.

Which products and versions are affected?

Auth0 Nextjs-Auth0 before 4.32.0.

Is there a fix for CVE-2026-107369?

Yes: fixed in 4.32.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-107369 attacked?

It is attacked over the network.

Am I affected by CVE-2026-107369?

Check whether you run Auth0 Nextjs-Auth0 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-107369: Auth0 nextjs-auth0 open redirect in post-login redirect

CVE-2026-107369 · Severity: medium · CVSS 6.1 · Published 2026-10-13

The Auth0 Next.js authentication SDK is used to manage user login flows in web applications. An attacker can exploit improper URL validation in the post-login redirect logic to send users to an attacker-controlled domain after they log in, potentially stealing credentials or performing phishing attacks.

Technologies: Auth0 Nextjs-Auth0. Vendors: Auth0.

Quick answers

Is CVE-2026-107369 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-107369 being exploited in the wild.
How severe is CVE-2026-107369?: Medium severity, with a CVSS score of 6.1, published 13 October 2026.
Which products and versions are affected?: Auth0 Nextjs-Auth0 before 4.32.0.
Is there a fix for CVE-2026-107369?: Yes: fixed in 4.32.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-107369 attacked?: It is attacked over the network.
Am I affected by CVE-2026-107369?: Check whether you run Auth0 Nextjs-Auth0 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 4.32.0

Technical details

The SDK validates the returnTo parameter as same-origin but fails to properly reconstruct it when generating the post-authentication redirect URL. The reconstruction logic can produce URLs that browsers interpret as absolute or scheme-relative paths, allowing redirects to unintended domains. This requires user interaction (clicking an authentication link) and results in low confidentiality and integrity impact through phishing or credential theft.

Affected products

Auth0 nextjs-auth0 before 4.32.0

Timeline

2026-10-13: disclosed
2026-10-13: patched

References

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