How severe is CVE-2025-67716?

CVE-2025-67716 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-67716 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67716?

CVE-2025-67716 affects Auth0 Nextjs-auth0. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67716?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-67716 have an EU (EUVD) identifier?

Yes. CVE-2025-67716 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202629.

When was CVE-2025-67716 published?

CVE-2025-67716 was published on 2025-12-11 and last updated on 2026-06-17.

CVE-2025-67716

CVE-2025-67716 is a medium-severity vulnerability in Auth0 Nextjs-auth0 with a CVSS 3.x base score of 5.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-184.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202629
Weakness: CWE-184
Affected product: Auth0 Nextjs-auth0
Published: 2025-12-11
Last modified: 2026-06-17

Description

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request. Successful exploitation may result in tokens being issued with unintended parameters. This issue is fixed in version 4.13.0.

Frequently asked questions

What is CVE-2025-67716?: The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request. Successful exploitation may result in tokens being issued with unintended parameters. This issue is fixed in version 4.13.0.
How severe is CVE-2025-67716?: CVE-2025-67716 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-67716 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67716?: CVE-2025-67716 affects Auth0 Nextjs-auth0. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67716?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-67716 have an EU (EUVD) identifier?: Yes. CVE-2025-67716 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202629.
When was CVE-2025-67716 published?: CVE-2025-67716 was published on 2025-12-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:auth0:nextjs-auth0:*:*:*:*:*:node.js:*:*

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