{"id":"USN-4896-2","summary":"lxml vulnerability","details":"USN-4896-1 fixed a vulnerability in lxml. This update provides\nthe corresponding update for Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that lxml incorrectly handled certain HTML attributes. A\n remote attacker could possibly use this issue to perform cross-site\n scripting (XSS) attacks.\n","modified":"2026-02-10T04:42:07Z","published":"2021-04-08T12:46:21Z","related":["UBUNTU-CVE-2021-28957"],"upstream":["CVE-2021-28957","UBUNTU-CVE-2021-28957"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4896-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28957"}],"affected":[{"package":{"name":"lxml","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/lxml@3.3.3-1ubuntu0.2+esm3?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.3-1ubuntu0.2+esm3"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"python-lxml","binary_version":"3.3.3-1ubuntu0.2+esm3"},{"binary_name":"python3-lxml","binary_version":"3.3.3-1ubuntu0.2+esm3"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4896-2.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-28957"}],"ecosystem":"Ubuntu:Pro:14.04:LTS"}}}],"schema_version":"1.7.3"}