{"action":"Upgrade hashcash to 1.21 or later.","affected":[{"fixed":"1.21","introduced":"0"}],"component":"hashcash","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1.21"],"id":"tcs_01M5N8MDT4JTTCKZB02GGKGESG","modified_at":"2026-10-22T23:47:32.920154678Z","published_at":"2006-06-27T18:05:00Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2006-3251","https://security-tracker.debian.org/tracker/CVE-2006-3251"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2006-3251","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2006-3251"}],"summary":"Heap-based buffer overflow in the array_push function in hashcash.c for Hashcash before 1.21 might allow attackers to execute arbitrary code via crafted entries."}