{"id":"UBUNTU-CVE-2025-66019","details":"pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patched in version 6.4.0.","modified":"2026-01-20T18:40:31.668670Z","published":"2025-11-26T00:15:00Z","upstream":["CVE-2025-66019"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-66019"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-66019"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-m449-cwjh-6pw7"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/commit/96186725e5e6f237129a58a97cd19204a9ce40b2"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/releases/tag/6.4.0"}],"affected":[{"package":{"name":"pypdf","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pypdf@4.0.2-1?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/2025/UBUNTU-CVE-2025-66019.json"}},{"package":{"name":"pypdf","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/pypdf@5.4.0-1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1-1","5.4.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.4.0-1","binary_name":"python3-pypdf"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66019.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U"},{"type":"Ubuntu","score":"medium"}]}