{"id":"OESA-2026-3217","summary":"python-lxml security update","details":"\\\r\n\r\nSecurity Fix(es):\n\nlxml_html_clean.Cleaner does not strip javascript: URLs from namespaced URL attributes (xlink:href). The vulnerability exists because Cleaner filters URL schemes by walking links via rewrite_links(), which delegates to iterlinks(), which only yields attributes named in lxml.html.defs.link_attrs. That allow-list contains no prefixed names such as xlink:href. As a result, when Cleaner is configured with safe_attrs_only=False, an xlink:href attribute carrying a javascript: URL survives sanitization untouched, and any browser that follows the SVG or MathML anchor specification will execute the JavaScript when the rendered link is clicked, leading to Cross-Site Scripting (XSS) attacks.(CVE-2026-49825)","modified":"2026-08-18T01:21:26.010491006Z","published":"2026-08-01T11:12:05Z","upstream":["CVE-2026-49825"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3217"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49825"}],"affected":[{"package":{"name":"python-lxml","ecosystem":"openEuler:24.03-LTS-SP1","purl":"pkg:rpm/openEuler/python-lxml&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0-5.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["python-lxml-debuginfo-5.1.0-5.oe2403sp1.aarch64.rpm","python-lxml-debugsource-5.1.0-5.oe2403sp1.aarch64.rpm","python-lxml-help-5.1.0-5.oe2403sp1.aarch64.rpm","python3-lxml-5.1.0-5.oe2403sp1.aarch64.rpm"],"src":["python-lxml-5.1.0-5.oe2403sp1.src.rpm"],"x86_64":["python-lxml-debuginfo-5.1.0-5.oe2403sp1.x86_64.rpm","python-lxml-debugsource-5.1.0-5.oe2403sp1.x86_64.rpm","python-lxml-help-5.1.0-5.oe2403sp1.x86_64.rpm","python3-lxml-5.1.0-5.oe2403sp1.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-3217.json"}},{"package":{"name":"python-lxml","ecosystem":"openEuler:24.03-LTS-SP3","purl":"pkg:rpm/openEuler/python-lxml&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0-5.oe2403sp3"}]}],"ecosystem_specific":{"src":["python-lxml-5.1.0-5.oe2403sp3.src.rpm"],"x86_64":["python-lxml-debuginfo-5.1.0-5.oe2403sp3.x86_64.rpm","python-lxml-debugsource-5.1.0-5.oe2403sp3.x86_64.rpm","python-lxml-help-5.1.0-5.oe2403sp3.x86_64.rpm","python3-lxml-5.1.0-5.oe2403sp3.x86_64.rpm"],"aarch64":["python-lxml-debuginfo-5.1.0-5.oe2403sp3.aarch64.rpm","python-lxml-debugsource-5.1.0-5.oe2403sp3.aarch64.rpm","python-lxml-help-5.1.0-5.oe2403sp3.aarch64.rpm","python3-lxml-5.1.0-5.oe2403sp3.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-3217.json"}},{"package":{"name":"python-lxml","ecosystem":"openEuler:24.03-LTS-SP4","purl":"pkg:rpm/openEuler/python-lxml&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0-5.oe2403sp4"}]}],"ecosystem_specific":{"src":["python-lxml-5.1.0-5.oe2403sp4.src.rpm"],"x86_64":["python-lxml-debuginfo-5.1.0-5.oe2403sp4.x86_64.rpm","python-lxml-debugsource-5.1.0-5.oe2403sp4.x86_64.rpm","python-lxml-help-5.1.0-5.oe2403sp4.x86_64.rpm","python3-lxml-5.1.0-5.oe2403sp4.x86_64.rpm"],"aarch64":["python-lxml-debuginfo-5.1.0-5.oe2403sp4.aarch64.rpm","python-lxml-debugsource-5.1.0-5.oe2403sp4.aarch64.rpm","python-lxml-help-5.1.0-5.oe2403sp4.aarch64.rpm","python3-lxml-5.1.0-5.oe2403sp4.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-3217.json"}},{"package":{"name":"python-lxml","ecosystem":"openEuler:20.03-LTS-SP4","purl":"pkg:rpm/openEuler/python-lxml&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.2-11.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["python-lxml-debuginfo-4.5.2-11.oe2003sp4.aarch64.rpm","python-lxml-debugsource-4.5.2-11.oe2003sp4.aarch64.rpm","python2-lxml-4.5.2-11.oe2003sp4.aarch64.rpm","python3-lxml-4.5.2-11.oe2003sp4.aarch64.rpm"],"noarch":["python-lxml-help-4.5.2-11.oe2003sp4.noarch.rpm"],"src":["python-lxml-4.5.2-11.oe2003sp4.src.rpm"],"x86_64":["python-lxml-debuginfo-4.5.2-11.oe2003sp4.x86_64.rpm","python-lxml-debugsource-4.5.2-11.oe2003sp4.x86_64.rpm","python2-lxml-4.5.2-11.oe2003sp4.x86_64.rpm","python3-lxml-4.5.2-11.oe2003sp4.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-3217.json"}},{"package":{"name":"python-lxml","ecosystem":"openEuler:22.03-LTS-SP4","purl":"pkg:rpm/openEuler/python-lxml&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.1-10.oe2203sp4"}]}],"ecosystem_specific":{"src":["python-lxml-4.7.1-10.oe2203sp4.src.rpm"],"x86_64":["python-lxml-debuginfo-4.7.1-10.oe2203sp4.x86_64.rpm","python-lxml-debugsource-4.7.1-10.oe2203sp4.x86_64.rpm","python3-lxml-4.7.1-10.oe2203sp4.x86_64.rpm"],"aarch64":["python-lxml-debuginfo-4.7.1-10.oe2203sp4.aarch64.rpm","python-lxml-debugsource-4.7.1-10.oe2203sp4.aarch64.rpm","python3-lxml-4.7.1-10.oe2203sp4.aarch64.rpm"],"noarch":["python-lxml-help-4.7.1-10.oe2203sp4.noarch.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-3217.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N"}]}