{"action":"Upgrade php-league-commonmark to 2.9.0-1 or later.","affected":[{"fixed":"2.9.0-1","introduced":"0"}],"component":"php-league-commonmark","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.9.0-1"],"id":"tcs_01M5NW1AR4SDCT45HD6C7Y7JFE","modified_at":"2026-10-09T09:47:31.514240381Z","published_at":"2026-09-07T13:20:42.870Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-86434","https://security-tracker.debian.org/tracker/CVE-2026-86434"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-86434#Debian:14/php-league-commonmark","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-86434"}],"summary":"league/commonmark versions >= 2.0.0 and < 2.8.4 (patched in 2.9.0) contain a denial of service vulnerability in UniqueSlugNormalizer::normalize(), which restarts its numeric-suffix search from 1 on ev"}