{"schemaVersion":3,"id":"CVE-2026-93601","aliases":["UBUNTU-CVE-2026-93601","DEBIAN-CVE-2026-93601","GHSA-xgp8-3hg3-c2mh","RUSTSEC-2026-0099"],"status":"published","duplicateOf":null,"title":null,"description":"rustls-webpki (the Rust webpki fork used by rustls) versions >= 0.101.0 and prior to 0.103.12 and 0.104.0-alpha.6 incorrectly accepted permitted-subtree DNS name constraints for certificates asserting a wildcard name. For example, a name constraint of accept.example.com was treated as satisfied by a certificate for *.example.com, which could feasibly assert reject.example.com — a name outside the permitted subtree. Because name constraints are restrictions applied to otherwise properly issued certificates, the issue is only reachable after signature verification succeeds and requires a misissued wildcard certificate to 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