high
8.8
CWE
74 79 77
Advisory Published
Updated

CVE-2021-43818: XSS

First published: Sun Dec 12 2021(Updated: )

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 the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.

Credit: security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
redhat/python-lxml<4.6.5
4.6.5
redhat/python-lxml<0:4.2.3-4.el8
0:4.2.3-4.el8
redhat/python-lxml<0:4.7.1-1.el8
0:4.7.1-1.el8
redhat/rh-python38-python-lxml<0:4.4.1-8.el7
0:4.4.1-8.el7
debian/lxml
4.3.2-1+deb10u4
4.6.3+dfsg-0.1+deb11u1
4.9.2-1
4.9.3-1
Lxml Lxml<4.6.5
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Netapp Solidfire
Netapp Solidfire Enterprise Sds
Netapp Hci Storage Node Firmware
Netapp Hci Storage Node
Oracle Communications Cloud Native Core Binding Support Function=22.1.3
Oracle Communications Cloud Native Core Network Exposure Function=22.1.1
Oracle Communications Cloud Native Core Policy=22.2.0
Oracle HTTP Server=12.2.1.3.0
Oracle HTTP Server=12.2.1.4.0
Oracle ZFS Storage Appliance Kit=8.8

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-43818?

    CVE-2021-43818 is a vulnerability in python-lxml's HTML Cleaner component that allows an attacker to trigger script execution in clients.

  • How does CVE-2021-43818 affect python-lxml?

    CVE-2021-43818 affects python-lxml versions prior to 4.6.5.

  • What is the severity of CVE-2021-43818?

    CVE-2021-43818 has a severity rating of 8.8 (High).

  • How can the CVE-2021-43818 vulnerability be fixed?

    To fix the CVE-2021-43818 vulnerability, upgrade python-lxml to version 4.6.5 or higher.

  • Where can I find more information about CVE-2021-43818?

    You can find more information about CVE-2021-43818 at the following references: [link1], [link2], [link3].

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203