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.
{
"sources": [
{
"id": "CVE-2026-5263",
"database_specific": {
"status": "Modified"
},
"imported": "2026-07-14T21:22:49.220Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-5263",
"modified": "2026-07-02T15:17:11.463Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5263",
"published": "2026-04-09T22:16:36.647Z"
},
{
"id": "EUVD-2026-21178",
"imported": "2026-07-14T21:22:50.970Z",
"url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-21178",
"modified": "2026-07-02T14:45:49Z",
"html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21178",
"published": "2026-04-09T21:15:48Z"
}
],
"license": "CC-BY-4.0"
}