HIGHCVE-2026-5263Published Modified CNA wolfSSL
CVE-2026-5263: URI nameConstraints not enforced in ConfirmNameConstraints()
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.
Metrics
- CVSS v4.0
- 7.0
- Severity
- HIGH
- Fixed in
- 5.9.1
- Affected Products
- 1
Fix available
5.9.1
Affected packages
- wolfSSL / wolfSSL< 5.9.1 (from 0)
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:NReferences