{"action":"Upgrade python3.11 to 3.11.2-6+deb12u9 or later.","affected":[{"fixed":"3.11.2-6+deb12u9","introduced":"0"}],"component":"python3.11","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["3.11.2-6+deb12u9"],"id":"tcs_01M5NQWEZ8PBGABKCBGCBVFKZ9","modified_at":"2026-10-28T06:00:09.503502627Z","published_at":"2026-08-10T14:17:21.560Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-18503","https://security-tracker.debian.org/tracker/CVE-2026-18503"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-18503#Debian:12/python3.11","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-18503"}],"summary":"Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff()."}