{"action":"Upgrade mercurial to 4.9-1 or later.","affected":[{"fixed":"4.9-1","introduced":"0"}],"component":"mercurial","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.9-1"],"id":"tcs_01M5NE6HC4Z6G685YCJB16DE9A","modified_at":"2026-09-21T07:01:11.312190229Z","published_at":"2019-04-22T16:29:01.913Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-3902","https://security-tracker.debian.org/tracker/CVE-2019-3902"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-3902#Debian:13/mercurial","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-3902"}],"summary":"A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository."}