{"action":"Upgrade squid to 4.9-1 or later.","affected":[{"fixed":"4.9-1","introduced":"0"}],"component":"squid","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.9-1"],"id":"tcs_01M5NDREEXHW0ZH3PT8TJAP4M4","modified_at":"2026-09-21T07:01:48.787113107Z","published_at":"2019-11-26T17:15:10.767Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-12523","https://security-tracker.debian.org/tracker/CVE-2019-12523"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-12523#Debian:14/squid","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-12523"}],"summary":"An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go th"}