CVE-2026-57826

openHiTLS 0.2.0 through 0.3.2 only checks basic constraints and CA flags for X.509 v3 intermediate certificates, ignoring v1/v2 certificates. This allows a non-CA v1/v2 certificate to act as a CA, enabling forged certificate chains and potential MITM attacks. The fix is in version 0.3.3 (compare ...

CVE-2026-57826

An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored...