CVE-2026-5263

HIGH

URI nameConstraints not enforced in ConfirmNameConstraints()

Title source: cna

Description

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.

References (1)

https://github.com/wolfSSL/wolfssl/pull/10048

Scores

CVSS v4 7.0

EPSS 0.0003

EPSS Percentile 7.5%

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

Details

CWE

CWE-295

Status published

Products (1)

wolfSSL/wolfSSL < 5.9.1

Published Apr 09, 2026

Tracked Since Apr 10, 2026