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CVE-2026-89134

Subject CN name-constraint check bypassed when non-DNS SAN present PUBLISHED

Description (CNA)

A certificate with no dNSName SAN but another SAN type present (e.g. registeredID or iPAddress) bypassed the Subject CN dNSName name-constraint check. The CN-as-DNS fallback was gated on cert->subjectCN != NULL && cert->altNames == NULL && !cert->isCA instead of "no dNSName SAN", so an out-of-scope CN was accepted. This incomplete fix from CVE-2026-6731, leading to the name-constraint check issue, was introduced in wolfSSL version 5.9.2.

Affected (CNA)

Vendor / productVersions
wolfSSL / wolfSSLaffected 5.9.2

CWE

CWE-295

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.