https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-13T03:35:20.722376+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2022-21656 CVE-2022-21656 — X.509 subjectAltName matching bypass in Envoy 2026-10-13T03:35:20.741400+00:00

Affected: envoyproxy envoy

Envoy is an open source edge and service proxy, designed for cloud-native applications. The default_validator.cc implementation used to implement the default certificate validation routines has a "type confusion" bug when processing subjectAltNames. This processing allows, for example, an rfc822Name or uniformResourceIndicator to be authenticated as a domain name. This confusion allows for the bypassing of nameConstraints, as processed by the underlying OpenSSL/BoringSSL implementation, exposing the possibility of impersonation of arbitrary servers. As a result Envoy will trust upstream certificates that should not be trusted.