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

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 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...

MiracleLinux 8 : python27:2.7 (AXSA:2021-2829:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2829:01 advisory. python: Unsafe use of eval on data retrieved via HTTP in the test suite CVE-2020-27619 python-jinja2: ReDoS vulnerability in the urlize filter...

MiracleLinux 7 : python-lxml-3.2.1-4.0.1.el7.AXS7 (AXSA:2024-8989:01)

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2024-8989:01 advisory. CVE-2021-43818: prevent certain crafted script content passing through in HTML Cleaner CVEs: CVE-2021-43818 lxml is a library for processing XML and HTML in...

MiracleLinux 8 : python-lxml-4.2.3-2.el8 (AXSA:2021-1839:01)

The remote MiracleLinux 8 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2021-1839:01 advisory. python-lxml: mXSS due to the use of improper parser CVE-2020-27783 Tenable has extracted the preceding description block directly from the MiracleLinux...

MiracleLinux 8 : python27:2.7 (AXSA:2022-3551:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-3551:01 advisory. python: urllib: Regular expression DoS in AbstractBasicAuthHandler CVE-2021-3733 python: ftplib should not use the host from the PASV response...

MiracleLinux 9 : python-lxml-4.6.5-3.el9 (AXSA:2023-4609:01)

The remote MiracleLinux 9 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2023-4609:01 advisory. lxml: NULL Pointer Dereference in lxml CVE-2022-2309 Tenable has extracted the preceding description block directly from the MiracleLinux security advisory...

MiracleLinux 7 : rh-python38 (AXSA:2021-2383:01)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2383:01 advisory. python-cryptography: Bleichenbacher timing oracle attack against RSA decryption CVE-2020-25659 python: Unsafe use of eval on data retrieved via HTTP...

MiracleLinux 8 : python-lxml-4.2.3-3.el8 (AXSA:2021-2726:02)

The remote MiracleLinux 8 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2021-2726:02 advisory. python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS CVE-2021-28957 Tenable has extracted the preceding description block...

MiracleLinux 8 : python38:3.8 and python38-devel:3.8 (AXSA:2022-2898:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-2898:01 advisory. python-psutil: Double free because of refcount mishandling CVE-2019-18874 python-jinja2: ReDoS vulnerability in the urlize filter CVE-2020-28493...

MiracleLinux 8 : python39:3.9 and python39-devel:3.9 (AXSA:2022-2905:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-2905:01 advisory. python: Information disclosure via pydoc CVE-2021-3426 python: urllib: Regular expression DoS in AbstractBasicAuthHandler CVE-2021-3733 python-lxml:...

MiracleLinux 8 : python-lxml-4.2.3-4.el8 (AXSA:2022-3370:01)

The remote MiracleLinux 8 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2022-3370:01 advisory. python-lxml: HTML Cleaner allows crafted and SVG embedded scripts to pass through CVE-2021-43818 Tenable has extracted the preceding description block direct...