{"action":"Upgrade perl to 5.42.3-1 or later.","affected":[{"fixed":"5.42.3-1","introduced":"0"}],"component":"perl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.42.3-1"],"id":"tcs_01M5NQFAAB506DRC8NSAYRPXX0","modified_at":"2026-10-05T10:00:06.395447500Z","published_at":"2026-07-13T17:16:48.923Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-13221","https://security-tracker.debian.org/tracker/CVE-2026-13221"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-13221#Debian:14/perl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-13221"}],"summary":"Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string bra"}