{"action":"Upgrade erlang to 1:27.3.4.1+dfsg-1+deb13u3 or later.","affected":[{"fixed":"1:27.3.4.1+dfsg-1+deb13u3","introduced":"0"}],"component":"erlang","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:27.3.4.1+dfsg-1+deb13u3"],"id":"tcs_01M5NS178SGXVKT0XF048ADR9P","modified_at":"2026-10-27T10:01:28.581860015Z","published_at":"2026-05-27T17:16:36.030Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-42790","https://security-tracker.debian.org/tracker/CVE-2026-42790"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-42790#Debian:13/erlang","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-42790"}],"summary":"Improper Certificate Validation vulnerability in Erlang OTP public_key (pubkey_cert and public_key modules) allows a DNS nameConstraints bypass via subject CommonName fallback in TLS hostname verifica"}