{"id":"UBUNTU-CVE-2026-27628","details":"pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.","modified":"2026-02-25T03:16:00Z","published":"2026-02-25T03:16:00Z","upstream":["CVE-2026-27628"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-27628"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-27628"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-2rw7-x74f-jg35"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/issues/3654"},{"type":"REPORT","url":"https://github.com/py-pdf/pypdf/commit/0fbd95938724ad2d72688d4112207c0590f0483f"}],"affected":[{"package":{"name":"pypdf2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/pypdf2@1.25.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.23+git20141008-1","1.25.1-1","1.25.1-1ubuntu0.1~esm1","1.25.1-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pypdf2","binary_version":"1.25.1-1ubuntu0.1~esm2"},{"binary_name":"python3-pypdf2","binary_version":"1.25.1-1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.json"}},{"package":{"name":"pypdf2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/pypdf2@1.26.0-2ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.0-2","1.26.0-2ubuntu0.1~esm1","1.26.0-2ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pypdf2","binary_version":"1.26.0-2ubuntu0.1~esm2"},{"binary_name":"python3-pypdf2","binary_version":"1.26.0-2ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.json"}},{"package":{"name":"pypdf2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pypdf2@1.26.0-3ubuntu1.20.04.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.0-2","1.26.0-3ubuntu1","1.26.0-3ubuntu1.20.04.1","1.26.0-3ubuntu1.20.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pypdf2","binary_version":"1.26.0-3ubuntu1.20.04.2"},{"binary_name":"python3-pypdf2","binary_version":"1.26.0-3ubuntu1.20.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.json"}},{"package":{"name":"pypdf2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pypdf2@1.26.0-4ubuntu0.22.04.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.0-4","1.26.0-4ubuntu0.22.04.1","1.26.0-4ubuntu0.22.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-pypdf2","binary_version":"1.26.0-4ubuntu0.22.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.json"}},{"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_name":"python3-pypdf","binary_version":"4.0.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.json"}},{"package":{"name":"pypdf2","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pypdf2@2.12.1-4?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.1-3","2.12.1-4"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-pypdf2","binary_version":"2.12.1-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.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_name":"python3-pypdf","binary_version":"5.4.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27628.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}