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.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9hmg-827w-9rhj nuts-node has JWT type confusion in v1 access token introspection that allows VP replay as access token
Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Tue, 26 May 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title nuts-node: JWT type confusion in v1 access token introspection allows VP replay as access token
Weaknesses CWE-345
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-26T17:35:59.019Z

Reserved: 2026-04-17T16:34:45.525Z

Link: CVE-2026-41164

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-26T18:16:47.683

Modified: 2026-05-26T18:16:47.683

Link: CVE-2026-41164

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-26T19:30:13Z

Weaknesses