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HSEC-2023-0006

x509-validation does not enforce pathLenConstraint

No scoreFix available

x509-validation does not enforce pathLenConstraint

x509-validation prior to version 1.4.8 did not enforce the pathLenConstraint value. Constrained CAs could accidentally (or deliberately) issue CAs below the maximum depth and x509-validation would accept certificates issued by the unauthorised intermediate CAs.

What each source reports

OSV No score

x509-validation does not enforce pathLenConstraint

x509-validation does not enforce pathLenConstraint

x509-validation prior to version 1.4.8 did not enforce the pathLenConstraint value. Constrained CAs could accidentally (or deliberately) issue CAs below the maximum depth and x509-validation would accept certificates issued by the unauthorised intermediate CAs.

Record
HSEC-2023-0006
Updated
2026-11-02

Affected packages

Affected packages
PackageAffectedFixed
x509-validation
Hackage
1.4.0 up to 1.4.8, plus listed versions
1.4.11.4.21.4.31.4.41.4.51.4.61.4.7
1.4.8

History

History
RecordedChangedSources
first indexedOSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

HSEC-2023-0006 is a vulnerability with no CVSS score yet in x509-validation, published November 14, 2025. No source lists public exploit code. Fixed in x509-validation 1.4.8.

References

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