{"schema_version":1,"title":"lxml (PyPI) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 8 vulnerabilities in lxml (PyPI): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-49825, was published on 20 August 2026.","url":"https://junglewise.ai/threats/technologies/lxml","json_url":"https://junglewise.ai/threats/technologies/lxml.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/lxml","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":2,"all_time":8,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":2},"latest":[{"cve":"CVE-2026-49825","cvss":8.2,"epss":0.0043,"slug":"cve-2026-49825-lxml-html-clean-xss-via-xlink-href-namespaced-url-attributes","title":"lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in ``lxml.html.defs.link_attrs`` were","severity":"high","exploited":false,"published_at":"2026-08-20T15:17:30.707+00:00","url":"https://junglewise.ai/threats/cve-2026-49825-lxml-html-clean-xss-via-xlink-href-namespaced-url-attributes"},{"cve":"CVE-2026-41066","cvss":7.5,"epss":0.0041,"slug":"cve-2026-41066-lxml-xxe-in-iterparse-and-etcompatxmlparser","title":"lxml XXE in iterparse and ETCompatXMLParser","severity":"high","exploited":false,"published_at":"2026-04-21T20:38:44+00:00","url":"https://junglewise.ai/threats/cve-2026-41066-lxml-xxe-in-iterparse-and-etcompatxmlparser"},{"cve":"CVE-2022-2309","cvss":3,"epss":0.0243,"slug":"cve-2022-2309-lxml-null-pointer-dereference-allows-attackers-to-cause-a-denial","title":"PYSEC-2022-230 - NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together","severity":"low","exploited":false,"published_at":"2022-07-05T10:15:00+00:00","url":"https://junglewise.ai/threats/cve-2022-2309-lxml-null-pointer-dereference-allows-attackers-to-cause-a-denial"},{"cve":"CVE-2021-43818","cvss":3.1,"epss":0.0248,"slug":"cve-2021-43818-lxml-s-html-cleaner-allows-crafted-and-svg-embedded-scripts-to","title":"PYSEC-2021-852 - lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain cra","severity":"low","exploited":false,"published_at":"2021-12-13T18:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-43818-lxml-s-html-cleaner-allows-crafted-and-svg-embedded-scripts-to"},{"cve":"CVE-2021-28957","cvss":3.1,"epss":0.0404,"slug":"cve-2021-28957-lxml-vulnerable-to-cross-site-scripting","title":"PYSEC-2021-19 - An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms argume","severity":"low","exploited":false,"published_at":"2021-03-21T05:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-28957-lxml-vulnerable-to-cross-site-scripting"},{"cve":"CVE-2020-27783","cvss":3.1,"epss":0.0398,"slug":"cve-2020-27783-lxml-vulnerable-to-cross-site-scripting","title":"PYSEC-2020-62 - A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused differe","severity":"low","exploited":false,"published_at":"2020-12-03T17:15:00+00:00","url":"https://junglewise.ai/threats/cve-2020-27783-lxml-vulnerable-to-cross-site-scripting"},{"cve":"CVE-2018-19787","cvss":3,"epss":0.0244,"slug":"cve-2018-19787-improper-neutralization-of-input-during-web-page-generation-in","title":"PYSEC-2018-12 - An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use esc","severity":"low","exploited":false,"published_at":"2018-12-02T10:29:00+00:00","url":"https://junglewise.ai/threats/cve-2018-19787-improper-neutralization-of-input-during-web-page-generation-in"},{"cve":"CVE-2014-3146","cvss":3.1,"epss":0.0633,"slug":"cve-2014-3146-lxml-cross-site-scripting-via-control-characters","title":"PYSEC-2014-9 - Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scriptin","severity":"low","exploited":false,"published_at":"2014-05-14T19:55:00+00:00","url":"https://junglewise.ai/threats/cve-2014-3146-lxml-cross-site-scripting-via-control-characters"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"tensorflow (PyPI)","slug":"pypi-tensorflow","vulnerabilities":428,"url":"https://junglewise.ai/threats/technologies/pypi-tensorflow"},{"name":"tensorflow-cpu (PyPI)","slug":"tensorflow-cpu","vulnerabilities":424,"url":"https://junglewise.ai/threats/technologies/tensorflow-cpu"},{"name":"tensorflow-gpu (PyPI)","slug":"tensorflow-gpu","vulnerabilities":421,"url":"https://junglewise.ai/threats/technologies/tensorflow-gpu"},{"name":"open-webui (PyPI)","slug":"open-webui","vulnerabilities":177,"url":"https://junglewise.ai/threats/technologies/open-webui"},{"name":"Django (PyPI)","slug":"django","vulnerabilities":172,"url":"https://junglewise.ai/threats/technologies/django"},{"name":"apache-airflow (PyPI)","slug":"apache-airflow","vulnerabilities":152,"url":"https://junglewise.ai/threats/technologies/apache-airflow"},{"name":"plone (PyPI)","slug":"pypi-plone","vulnerabilities":101,"url":"https://junglewise.ai/threats/technologies/pypi-plone"},{"name":"praisonai (PyPI)","slug":"pypi-praisonai","vulnerabilities":86,"url":"https://junglewise.ai/threats/technologies/pypi-praisonai"},{"name":"exiv2 (PyPI)","slug":"exiv2","vulnerabilities":85,"url":"https://junglewise.ai/threats/technologies/exiv2"},{"name":"nltk (PyPI)","slug":"nltk","vulnerabilities":83,"url":"https://junglewise.ai/threats/technologies/nltk"},{"name":"mlflow (PyPI)","slug":"mlflow","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/mlflow"},{"name":"pillow (PyPI)","slug":"pillow","vulnerabilities":79,"url":"https://junglewise.ai/threats/technologies/pillow"}],"technology":{"hub":true,"name":"lxml (PyPI)","slug":"lxml","vendor":{"name":"PyPI","slug":"pypi","url":"https://junglewise.ai/threats/vendors/pypi"},"aliases":[],"homepage":"https://lxml.de/","repo_url":"https://github.com/lxml/lxml","description":"A Pythonic binding for the C libraries libxml2 and libxslt, providing XML and HTML processing capabilities.","url":"https://junglewise.ai/threats/technologies/lxml"},"most_severe":[{"cve":"CVE-2026-49825","cvss":8.2,"epss":0.0043,"slug":"cve-2026-49825-lxml-html-clean-xss-via-xlink-href-namespaced-url-attributes","title":"lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in ``lxml.html.defs.link_attrs`` were","severity":"high","exploited":false,"published_at":"2026-08-20T15:17:30.707+00:00","url":"https://junglewise.ai/threats/cve-2026-49825-lxml-html-clean-xss-via-xlink-href-namespaced-url-attributes"},{"cve":"CVE-2026-41066","cvss":7.5,"epss":0.0041,"slug":"cve-2026-41066-lxml-xxe-in-iterparse-and-etcompatxmlparser","title":"lxml XXE in iterparse and ETCompatXMLParser","severity":"high","exploited":false,"published_at":"2026-04-21T20:38:44+00:00","url":"https://junglewise.ai/threats/cve-2026-41066-lxml-xxe-in-iterparse-and-etcompatxmlparser"},{"cve":"CVE-2014-3146","cvss":3.1,"epss":0.0633,"slug":"cve-2014-3146-lxml-cross-site-scripting-via-control-characters","title":"PYSEC-2014-9 - Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scriptin","severity":"low","exploited":false,"published_at":"2014-05-14T19:55:00+00:00","url":"https://junglewise.ai/threats/cve-2014-3146-lxml-cross-site-scripting-via-control-characters"},{"cve":"CVE-2021-28957","cvss":3.1,"epss":0.0404,"slug":"cve-2021-28957-lxml-vulnerable-to-cross-site-scripting","title":"PYSEC-2021-19 - An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms argume","severity":"low","exploited":false,"published_at":"2021-03-21T05:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-28957-lxml-vulnerable-to-cross-site-scripting"},{"cve":"CVE-2020-27783","cvss":3.1,"epss":0.0398,"slug":"cve-2020-27783-lxml-vulnerable-to-cross-site-scripting","title":"PYSEC-2020-62 - A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused differe","severity":"low","exploited":false,"published_at":"2020-12-03T17:15:00+00:00","url":"https://junglewise.ai/threats/cve-2020-27783-lxml-vulnerable-to-cross-site-scripting"},{"cve":"CVE-2021-43818","cvss":3.1,"epss":0.0248,"slug":"cve-2021-43818-lxml-s-html-cleaner-allows-crafted-and-svg-embedded-scripts-to","title":"PYSEC-2021-852 - lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain cra","severity":"low","exploited":false,"published_at":"2021-12-13T18:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-43818-lxml-s-html-cleaner-allows-crafted-and-svg-embedded-scripts-to"},{"cve":"CVE-2018-19787","cvss":3,"epss":0.0244,"slug":"cve-2018-19787-improper-neutralization-of-input-during-web-page-generation-in","title":"PYSEC-2018-12 - An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use esc","severity":"low","exploited":false,"published_at":"2018-12-02T10:29:00+00:00","url":"https://junglewise.ai/threats/cve-2018-19787-improper-neutralization-of-input-during-web-page-generation-in"},{"cve":"CVE-2022-2309","cvss":3,"epss":0.0243,"slug":"cve-2022-2309-lxml-null-pointer-dereference-allows-attackers-to-cause-a-denial","title":"PYSEC-2022-230 - NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together","severity":"low","exploited":false,"published_at":"2022-07-05T10:15:00+00:00","url":"https://junglewise.ai/threats/cve-2022-2309-lxml-null-pointer-dereference-allows-attackers-to-cause-a-denial"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}