What is CVE-2026-41164?

CVE-2026-41164 is a medium-severity vulnerability in Nuts-foundation Nuts-node, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.4/10. Published 2026-05-26.

How severe is CVE-2026-41164?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Nuts-foundation Nuts-node

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/introspect_access_token) accepts any JWT signed by a key present on the node, without vali…

EPSS: 0.000 (2.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nuts-foundation Nuts-node — versions >= 6.0.0-alpha.1, < 6.2.3, < 5.4.31

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-41164?: CVE-2026-41164 is a medium-severity vulnerability in Nuts-foundation Nuts-node, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.4/10. Published 2026-05-26.
How severe is CVE-2026-41164?: Medium severity. CVSS v3 base score is 4.4 out of 10.