Medium

Spoofing attack due to unvalidated KDC in node-krb5

  • Disclosed: 01.09.2020
  • Updated: 11.10.2026 10:22

Affected versions of node-krb5 do not validate the KDC prior to authenticating, which might allow an attacker with network access and enough time to spoof the KDC and impersonate a valid user without knowing their credentials.

Recommendation

It appears that this will remain unfixed indefinitely, as the Github issue for this vulnerability has been open since 2015, with no work on it since then.

At this time, the best available mitigation is to use an alternative module that is actively maintained and provides similar functionality. There are multiple modules fitting this criteria available on npm..

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package node-krb5 >= 0.0.0 no fix

References

CVSS score -
Weakness (CWE)
-
Platform
npm
Package
node-krb5
Disclosed
01.09.2020
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-4v9q-hm2p-68c4 - CC BY 4.0

Vulnerability history: node-krb5

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

This is the only known vulnerability of this package.

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