Vulnerability Details CVE-2026-5263
URI nameConstraints from constrained intermediate CAs are parsed but not enforced during certificate chain verification in wolfcrypt/src/asn.c. A compromised or malicious sub-CA could issue leaf certificates with URI SAN entries that violate the nameConstraints of the issuing CA, and wolfSSL would accept them as valid.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.5%
CVSS Severity