VDB
CVE-2026-5263
CVE-2026-5263
PUBLISHED
CVSS 7 HIGH
Reported by wolfSSL · Published April 9, 2026
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.
EPSS 0.02% · 6.8th percentile
Risk Scores
CVSS v4.0
7
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N
EPSS Score
0.02%
6.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| wolfSSL | wolfSSL | 0 |
| wolfSSL | wolfSSL | 0 |
Timeline
- Apr 9, 2026 CVE Published
- Apr 10, 2026 EPSS Score
- Apr 10, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score