CVE-2026-28350 lxml_html_clean: <base> tag injection through default Cleaner configuration

lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.4, the tag passes through the default Cleaner configuration. While pagestructure=True removes html, head, and title tags, there is no specific handling for , allowing an attacker to inje...

CVE-2026-28348 lxml_html_clean: CSS @import Filter Bypass via Unicode Escapes

lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.4, the hassneakyjavascript method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression filters,...

CVE-2026-28348 lxml_html_clean: CSS @import Filter Bypass via Unicode Escapes

lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.4, the hassneakyjavascript method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression filters,...

CVE-2026-28348

lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.4, the hassneakyjavascript method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression filters,...

CVE-2026-28348 lxml_html_clean: CSS @import Filter Bypass via Unicode Escapes

lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.4, the hassneakyjavascript method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression filters,...

lxml-html-clean has <base> tag injection through default Cleaner configuration

Summary The tag passes through the default Cleaner configuration. While pagestructure=True removes html, head, and title tags, there is no specific handling for , allowing an attacker to inject it and hijack relative links on the page. Details The tag is not currently in the pagestructure kill se...

Improper Encoding or Escaping of Output

Overview lxml-html-clean is a HTML cleaner from lxml project Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the hassneakyjavascript function. An attacker can cause external CSS to be loaded or execute scripts in certain browsers by injecting special...

lxml-html-clean has CSS @import Filter Bypass via Unicode Escapes

Summary The hassneakyjavascript method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression filters, allowing external CSS loading or XSS in older browsers. Details The root cause is located in clean.py around...

PT-2026-22701

Name of the Vulnerable Software and Affected Versions lxml html clean versions prior to 0.4.4 Description The software does not properly handle the tag during HTML cleaning. Specifically, the tag is not removed even when page structure=True, which removes html, head, and title tags. This allows a...

PT-2026-22989

Name of the Vulnerable Software and Affected Versions lxml html clean versions prior to 0.4.4 Description The has sneaky javascript method in lxml html clean incorrectly strips backslashes before checking for dangerous CSS keywords. This allows CSS Unicode escape sequences to bypass the @import a...

Linux Distros Unpatched Vulnerability : CVE-2024-52595

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.0, the HTML Parser in lxml does not properly hand...

PT-2024-35391 · Unknown +1 · Lxml Html Clean +1

Name of the Vulnerable Software and Affected Versions: lxml html clean versions prior to 0.4.0 Description: The HTML Parser in lxml does not properly handle context-switching for special HTML tags such as , , and . This behavior deviates from how web browsers parse and interpret such tags...

lxml_html_clean 安全漏洞

lxmlhtmlclean is a separate project of the Fedora Python SIG open source HTML cleanup function copied from lxml.HTML.clean. A security vulnerability exists in versions of lxmlhtmlclean prior to 0.4.0, which stems from improper handling of special tags and is vulnerable to cross-site scripting...

SUSE CVE-2014-3146

Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting XSS attacks via control characters in the link scheme to the cleanhtml function...

SUSE CVE-2018-19787

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 escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to...

GHSA-XP26-P53H-6H2P Improper Neutralization of Input During Web Page Generation in LXML

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 escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to...

The vulnerability in the lxml.html.clean module’s lxml/html/clean.py file allows a attacker to execute cross-site scripting attacks.

The vulnerability in the lxml.html.clean module’s lxml/html/clean.py file relates to the lack of measures taken to protect the structure of web pages. Exploiting this vulnerability allows a remote attacker to perform cross-site scripting attacks...

AZL-6806 CVE-2018-19787 affecting package python-lxml for versions less than 4.8.0-1

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 escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to...

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 escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to...

UBUNTU-CVE-2018-19787

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 escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to...