{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"bouncycastle","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NQETWEQS2GEEG6RDB0TR96","modified_at":"2026-10-03T04:00:07.796772729Z","published_at":"2026-08-03T04:16:39.177Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-12803","https://security-tracker.debian.org/tracker/CVE-2026-12803"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-12803","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-12803"}],"summary":"In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery). This issue also affects Bouncy Castle for Java LTS before 2.73.12."}