nuts-foundation/nuts-node

nuts-foundation/nuts-node

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The reference implementation of the Nuts specification. A decentralized identity network based on the w3c ssi concepts with practical functionality for the healthcare domain.
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CVE History

CVEPublishedCVSS v3CVSS v2
CVE-2026-41164↗
4.4 MEDIUM—

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.