CVE-2026-41164

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/introspectaccesstoken accepts any JWT signed by a key present on the node, without validating the JWT type, issuer-to-key binding, or required claims...

CVE-2026-41164

The CVE concerns nuts-node, the reference implementation of the Nuts spec. Prior to versions 6.2.3 (and 5.4.31 for the 5.x branch), the v1 access token introspection endpoint (/auth/v1/introspect_access_token) validates only standard JWTs, and does not enforce Nuts-specific checks such as JWT typ...