{"action":"Upgrade ruby-commonmarker to 0.21.0-1 or later.","affected":[{"fixed":"0.21.0-1","introduced":"0"}],"component":"ruby-commonmarker","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["0.21.0-1"],"id":"tcs_01M5NF4ENFFKCY08QJ9PCA5DG5","modified_at":"2026-09-11T11:02:38.833272086Z","published_at":"2020-07-01T23:15:10.443Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-5238","https://security-tracker.debian.org/tracker/CVE-2020-5238"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-5238#Debian:12/ruby-commonmarker","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-5238"}],"summary":"The table extension in GitHub Flavored Markdown before version 0.29.0.gfm.1 takes O(n * n) time to parse certain inputs. An attacker could craft a markdown table which would take an unreasonably long"}