{"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:12","exploited":false,"fixed_versions":["4.9-1"],"id":"tcs_01M5NE1FM6DDMF4BXCVDHTXSWV","modified_at":"2026-09-21T07:02:33.822139017Z","published_at":"2019-11-26T17:15:12.843Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-18676","https://security-tracker.debian.org/tracker/CVE-2019-18676"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-18676","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-18676"}],"summary":"An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy."}