{"id":"DEBIAN-CVE-2026-119205","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop when cloning or duplicating a crafted cyclic DictionaryObject. Clone traversal checked generated destination references rather than the original source references, allowing some source cycles to evade the visited-object check. This issue is fixed in version 6.21.4.","modified":"2026-10-30T09:00:08.341795636Z","published":"2026-10-29T21:17:19.677Z","upstream":["CVE-2026-119205"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-119205"}],"affected":[{"package":{"name":"pypdf","ecosystem":"Debian:12","purl":"pkg:deb/debian/pypdf?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.17.4-1","3.4.1-1","3.4.1-1+deb12u1","4.0.0-1","4.0.0-1~exp1","4.0.1-1","4.0.2-1","4.1.0-1","4.2.0-1","4.3.1-1","5.4.0-1","6.19.0-1","6.21.0-1","6.21.1-1","6.9.0-1","6.9.2-1","6.9.2-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-119205.json"}},{"package":{"name":"pypdf","ecosystem":"Debian:13","purl":"pkg:deb/debian/pypdf?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1","6.19.0-1","6.21.0-1","6.21.1-1","6.9.0-1","6.9.2-1","6.9.2-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-119205.json"}},{"package":{"name":"pypdf","ecosystem":"Debian:14","purl":"pkg:deb/debian/pypdf?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1","6.19.0-1","6.21.0-1","6.21.1-1","6.9.0-1","6.9.2-1","6.9.2-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-119205.json"}},{"package":{"name":"pypdf2","ecosystem":"Debian:12","purl":"pkg:deb/debian/pypdf2?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.1-3","2.12.1-3+deb12u1","2.12.1-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-119205.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}