CVE-2026-103602

The bc-csharp library by Legion of the Bouncy Castle Inc. versions before 2.7.0 is vulnerable to improper certificate validation in the PkixNameConstraintValidator component. The root cause is a failure to remove the RFC 1034 root-label trailing dot during comparison between names and constraints...

EUVD-2026-91232

Improper certificate validation in PkixNameConstraintValidator in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can obtain certificates from, a name-constrained intermediate CA to have certificates accepted during PKIX certification path validation fo...

PT-2026-104123

Improper certificate validation in PkixNameConstraintValidator in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who controls, or can obtain certificates from, a name-constrained intermediate CA to have certificates accepted during PKIX certification path validation fo...

Shopify: [h1-2102] FQDN takeover on all Shopify wholesale customer domains by trailing dot (RFC 1034)

Summary: Due to a missing domain format check in Shopify's wholesale functionality, it is possible to serve arbitrary content on the customer's domain through existing DNS records already configured to work with Shopify. I only tested with domains that I own but as far as I understand, this would...