{"action":"Upgrade cyrus-imapd to 3.12.4-1 or later.","affected":[{"fixed":"3.12.4-1","introduced":"0"}],"component":"cyrus-imapd","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.12.4-1"],"id":"tcs_01M5NT857ZZZKRCYSYHPXKBS36","modified_at":"2026-10-01T03:03:13.576435033Z","published_at":"2026-09-09T20:18:36.943Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-61915","https://security-tracker.debian.org/tracker/CVE-2026-61915"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-61915#Debian:14/cyrus-imapd","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-61915"}],"summary":"An issue was discovered in Cyrus IMAP before 3.12.4. There is a VPATCH BYPARAM double-free. An authenticated calendar user could crash a Cyrus CalDAV worker with a PATCH containing PATCH-ACTION=\"BYPAR"}