CVE Catalog

CVE-2026-41164

MediumCVSS 4.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.08%

0th percentile - higher than 0% of all known CVEs

Summary

In nuts-node, the v1 access token introspection endpoint accepts any JWT signed by a key on the node without validating JWT type, issuer-to-key binding, or required claims, allowing a Verifiable Presentation JWT to be replayed as an access token.

Risk Assessment

An attacker could gain unauthorized access to resources protected by access tokens.

Recommendation

Update nuts-node to version 6.2.3 or 5.4.31, which include the fix.

Related vulnerabilities

Original NVD description (English source)

nuts-node is the reference implementation of the Nuts specification. Prior to 6.2.3 and 5.4.31, the v1 access token introspection endpoint (/auth/v1/introspect_access_token) accepts any JWT signed by a key present on the node, without validating the JWT type, issuer-to-key binding, or required claims. This allows a Verifiable Presentation (VP) JWT to be replayed as an access token and receive an active: true introspection response. This vulnerability is fixed in 6.2.3 and 5.4.31.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS