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lxml
7 known vulnerabilities across versions
Vulnerabilities are listed by affected version. Select any CVE for the full briefing and its intelligence graph.
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CVE-2026-41066
< 6.1.0
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 defau
7.5
HIGH
CVE-2022-2309
< 4.9.1
NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used
7.5
HIGH
CVE-2021-43818
< 4.6.5
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 c
8.2
HIGH
CVE-2021-28957
< 4.6.3
An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and fo
6.1
MEDIUM
CVE-2020-27783
>= 1.2 and < 4.6.2
A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caus
6.1
MEDIUM
CVE-2018-19787
< 4.2.5
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 th
6.1
MEDIUM
CVE-2014-3146
<= 3.3.4
Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-sit
6.1
MEDIUM
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