{"id":"UBUNTU-CVE-2026-119208","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This issue is fixed in version 6.21.3.","modified":"2026-10-31T03:30:12.130900882Z","published":"2026-10-30T00:00:00Z","upstream":["CVE-2026-119208"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-119208"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-119208"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/commit/82b91951dc74496bb3efe6465434f041bb6a5e6b"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/pull/4270"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7"}],"affected":[{"package":{"name":"pypdf","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pypdf?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.1-1","3.17.4-1","4.0.0-1","4.0.1-1","4.0.2-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.0.2-1","binary_name":"python3-pypdf"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119208.json"}},{"package":{"name":"pypdf","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/pypdf?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.9.2-1","6.9.2-2"],"ecosystem_specific":{"binaries":[{"binary_version":"6.9.2-2","binary_name":"python3-pypdf"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119208.json"}},{"package":{"name":"pypdf","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/pypdf?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-1","6.9.2-1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.9.2-1","binary_name":"python3-pypdf"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-119208.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"},{"type":"Ubuntu","score":"medium"}]}