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Vendor

lxml

4 known vulnerabilities.

lxml at a glance

Last 12 months
2
Critical · all time
0
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 1 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 1 vulnerability May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 0 vulnerabilities August 2026: 1 vulnerability September 2026: 0 vulnerabilities Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
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Products

lxml 3 lxml/lxml 1
All Critical High Medium Low Exploited only Public exploit

4 results · Feed

  • High 8.2
    CVE-2026-49825

    lxml: javascript: URL bypass in Cleaner via xlink:href

    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 missing ``xlink:href``, which can be used for URL bypass attacks in embedded SVG/MathML/etc. content. This vulnerabilit…

    lxml fedora-python lxml_html_clean lxml Debian Ubuntu PyPI
  • High 7.5
    CVE-2026-41066

    lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files

    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…

    lxml lxml lxml lxml Debian Ubuntu Alpine PyPI
  • Medium 5.3
    CVE-2022-2309

    NULL Pointer Dereference in lxml/lxml

    NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through fo…

    lxml lxml/lxml libxml2 libxml2 Debian Ubuntu Alpine PyPI
  • High 8.2
    CVE-2021-43818

    HTML Cleaner allows crafted and SVG embedded scripts to pass through

    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 crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ th…

    lxml lxml lxml lxml Debian Ubuntu Alpine PyPI