GHSA-VQQP-X5QM-5QP4 FastMCP MCP client wrappers construct M2M OAuth providers without issuer binding — client secret redirectable to attacker-advertised authorization server

Maintainer assessment and remediation This report is accepted as a FastMCP credential-binding vulnerability. Affected versions of the OAuth client credentials providers do not expose the authorization-server issuer that owns pre-registered credentials. An untrusted or compromised MCP server can...

nuts-node has JWT type confusion in v1 access token introspection that allows VP replay as access token

Summary 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. This allows a Verifiable Presentation VP JWT to be replayed as an access token and...

GHSA-9HMG-827W-9RHJ nuts-node has JWT type confusion in v1 access token introspection that allows VP replay as access token

Summary 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. This allows a Verifiable Presentation VP JWT to be replayed as an access token and...

PT-2026-37245

Name of the Vulnerable Software and Affected Versions nuts-node versions prior to 5.4.31 nuts-node versions prior to 6.2.3 Description The v1 access token introspection endpoint '/auth/v1/introspect access token' accepts any JSON Web Token JWT signed by a key present on the node without validatin...