EUVD-2026-31940

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...

Validation Bypass

prime-jwt is vulnerable to validation bypasses. The library allows the decoding of non-signed JWT signatures, which allows a malicious user to pass a JWT signature with a valid header using the none algorithm and bypass validation...