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VulnerabilityPublished

CVE-2026-41164: nuts-node · Insufficient Verification of Data Authenticity

Affects nuts-nodeSource CVE Database V5

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Not known to be exploited · CVSS 4.4 Medium : upgrade to 6.2.3 or 5.4.31 when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
4.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.07% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.2.3, 5.4.31
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade nuts-node to 6.2.3 or 5.4.31; nuts-foundation/nuts-node to 5.4.31.

Affected software

ProductAffectedFixed in
nuts-foundationnuts-nodeAffected
  • >=6.0.0-alpha.1 <6.2.3
Fixed in
  • 6.2.3
nuts-foundationnuts-nodeAffected
  • <5.4.31
Fixed in
  • 5.4.31
GitHubnuts-foundation/nuts-nodepkg:github/nuts-foundation/nuts-nodeOther threatsAffected
  • <5.4.31
Fixed in
  • 5.4.31

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

This vulnerability is fixed in nuts-node versions 6.2.3 and 5.4.31. Users should upgrade to these or later versions to remediate the issue. Patch status is not explicitly stated as 'official-fix' in the vendor advisory, but the description confirms the fix is included in these versions. No additional mitigation steps are indicated.

Description

CVE-2026-41164 is a medium severity vulnerability in nuts-foundation's nuts-node prior to versions 6.2.3 and 5.4.31. The v1 access token introspection endpoint incorrectly accepts any JWT signed by a key on the node without properly validating the JWT type, issuer-to-key binding, or required claims. This flaw allows a Verifiable Presentation (VP) JWT to be replayed as an access token and receive an active introspection response. The issue is fixed in versions 6.2.3 and 5.

References

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