{"action":"Upgrade snakeyaml to 1.25+ds-3 or later.","affected":[{"fixed":"1.25+ds-3","introduced":"0"}],"component":"snakeyaml","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.25+ds-3"],"id":"tcs_01M5NCBPDK7XBA18CN5GT2YZAB","modified_at":"2026-09-01T20:03:47.177972643Z","published_at":"2019-12-12T03:15:10.850Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-18640","https://security-tracker.debian.org/tracker/CVE-2017-18640"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-18640#Debian:13/snakeyaml","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-18640"}],"summary":"The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564."}