{"action":"Upgrade php8.4 to 8.4.21-1 or later.","affected":[{"fixed":"8.4.21-1","introduced":"0"}],"component":"php8.4","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["8.4.21-1"],"id":"tcs_01M5NT76RG70E15KPHM0GBNWZ0","modified_at":"2026-10-01T03:03:28.752915915Z","published_at":"2026-05-10T06:16:07.397Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-6104","https://security-tracker.debian.org/tracker/CVE-2026-6104"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-6104#Debian:14/php8.4","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-6104"}],"summary":"In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL byte is passed to mb_convert_encoding() or related mbstring functions, the code incorrectly"}