How severe is CVE-2025-65945?

CVE-2025-65945 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2025-65945 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65945?

CVE-2025-65945 primarily affects Auth0 Node-jws. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-65945?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-65945 have an EU (EUVD) identifier?

Yes. CVE-2025-65945 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201250.

When was CVE-2025-65945 published?

CVE-2025-65945 was published on 2025-12-04 and last updated on 2026-06-17.

CVE-2025-65945

CVE-2025-65945 is a high-severity vulnerability in Auth0 Node-jws with a CVSS 3.x base score of 7.5. 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-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201250
Weakness: CWE-347
Affected product: Auth0 Node-jws
Published: 2025-12-04
Last modified: 2026-06-17

Description

auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature verification vulnerability when using the HS256 algorithm under specific conditions. Applications are affected when they use the jws.createVerify() function for HMAC algorithms and use user-provided data from the JSON Web Signature protected header or payload in HMAC secret lookup routines, which can allow attackers to bypass signature verification. This issue has been patched in versions 3.2.3 and 4.0.1.

Frequently asked questions

What is CVE-2025-65945?: auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature verification vulnerability when using the HS256 algorithm under specific conditions. Applications are affected when they use the jws.createVerify() function for HMAC algorithms and use user-provided data from the JSON Web Signature protected header or payload in HMAC secret lookup routines, which can allow attackers to bypass signature verification. This issue has been patched in versions 3.2.3 and 4.0.1.
How severe is CVE-2025-65945?: CVE-2025-65945 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2025-65945 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65945?: CVE-2025-65945 primarily affects Auth0 Node-jws. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-65945?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-65945 have an EU (EUVD) identifier?: Yes. CVE-2025-65945 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201250.
When was CVE-2025-65945 published?: CVE-2025-65945 was published on 2025-12-04 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:auth0:node-jws:*:*:*:*:*:node.js:*:*
cpe:2.3:a:auth0:node-jws:4.0.0:*:*:*:*:node.js:*:*

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