{"action":"Upgrade sendmail to 8.18.1-1 or later.","affected":[{"fixed":"8.18.1-1","introduced":"0"}],"component":"sendmail","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["8.18.1-1"],"id":"tcs_01M5NJEP67JWA8ZFBBYXRA0V2Y","modified_at":"2026-10-26T18:01:56.628042421Z","published_at":"2023-12-24T06:15:07.527Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-51765","https://security-tracker.debian.org/tracker/CVE-2023-51765"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-51765#Debian:13/sendmail","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-51765"}],"summary":"sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowin"}