{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"cyrus-imapd","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":[],"id":"tcs_01M5NT84SJYNKXV8W5R9QGVGPB","modified_at":"2026-10-01T03:03:28.886180826Z","published_at":"2026-09-09T20:18:36.800Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-61911","https://security-tracker.debian.org/tracker/CVE-2026-61911"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-61911#Debian:13/cyrus-imapd","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-61911"}],"summary":"An issue was discovered in Cyrus IMAP before 3.12.4. There is a Sieve mailbox existence oracle. An authenticated user could install a Sieve script that probed whether another user's private mailbox ex"}