{"id":"UBUNTU-CVE-2026-41066","details":"lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities='internal' or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.","modified":"2026-05-20T16:12:58.817688683Z","published":"2026-04-24T17:16:00Z","upstream":["CVE-2026-41066"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-41066"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-41066"},{"type":"REPORT","url":"https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw"},{"type":"REPORT","url":"https://bugs.launchpad.net/lxml/+bug/2146291"}],"affected":[{"package":{"name":"lxml","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.0-1","3.3.0~beta2-1","3.3.0~beta4-1","3.3.1-1","3.3.2-1","3.3.2-1build1","3.3.3-1","3.3.3-1ubuntu0.1","3.3.3-1ubuntu0.2","3.3.3-1ubuntu0.2+esm1","3.3.3-1ubuntu0.2+esm2","3.3.3-1ubuntu0.2+esm3","3.3.3-1ubuntu0.2+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"python-lxml","binary_version":"3.3.3-1ubuntu0.2+esm5"},{"binary_name":"python3-lxml","binary_version":"3.3.3-1ubuntu0.2+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.4-1","3.5.0-1","3.5.0-1build1","3.5.0-1ubuntu0.1","3.5.0-1ubuntu0.2","3.5.0-1ubuntu0.3","3.5.0-1ubuntu0.4","3.5.0-1ubuntu0.4+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-lxml","binary_version":"3.5.0-1ubuntu0.4+esm2"},{"binary_name":"python3-lxml","binary_version":"3.5.0-1ubuntu0.4+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0-1","4.1.0-1","4.2.0-1","4.2.1-1","4.2.1-1ubuntu0.1","4.2.1-1ubuntu0.2","4.2.1-1ubuntu0.3","4.2.1-1ubuntu0.4","4.2.1-1ubuntu0.6"],"ecosystem_specific":{"binaries":[{"binary_version":"4.2.1-1ubuntu0.6","binary_name":"python-lxml"},{"binary_name":"python3-lxml","binary_version":"4.2.1-1ubuntu0.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.1-1","4.4.1-1build1","4.4.2-1","4.5.0-1","4.5.0-1ubuntu0.1","4.5.0-1ubuntu0.2","4.5.0-1ubuntu0.3","4.5.0-1ubuntu0.5"],"ecosystem_specific":{"binaries":[{"binary_name":"python-lxml","binary_version":"4.5.0-1ubuntu0.5"},{"binary_version":"4.5.0-1ubuntu0.5","binary_name":"python3-lxml"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.3+dfsg-0.1","4.6.4-1","4.6.4-1ubuntu1","4.7.1-1","4.8.0-1","4.8.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.8.0-1build1","binary_name":"python3-lxml"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.3-1","4.9.3-1build1","4.9.4-1","5.1.0-1","5.1.0-1build1","5.1.0-1build2","5.2.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-lxml","binary_version":"5.2.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.2-1","5.4.0-1","5.4.0-1build1","6.0.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-lxml","binary_version":"6.0.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41066.json"}},{"package":{"name":"lxml","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/lxml?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.1-1","6.0.1-1build1","6.0.2-1","6.0.2-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.0.2-1build1","binary_name":"python3-lxml"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices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