UBUNTU-CVE-2024-52595

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Source
https://ubuntu.com/security/CVE-2024-52595
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-52595.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2024-52595
Upstream
Published
2024-11-19T22:15:00Z
Modified
2026-05-20T16:19:23Z
Severity
  • 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H CVSS Calculator
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

lxml_html_clean 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 handle context-switching for special HTML tags such as <svg>, <math> and <noscript>. This behavior deviates from how web browsers parse and interpret such tags. Specifically, content in CSS comments is ignored by lxml_html_clean but may be interpreted differently by web browsers, enabling malicious scripts to bypass the cleaning process. This vulnerability could lead to Cross-Site Scripting (XSS) attacks, compromising the security of users relying on lxml_html_clean in default configuration for sanitizing untrusted HTML content. Users employing the HTML cleaner in a security-sensitive context should upgrade to lxml 0.4.0, which addresses this issue. As a temporary mitigation, users can configure lxml_html_clean with the following settings to prevent the exploitation of this vulnerability. Via remove_tags, one may specify tags to remove - their content is moved to their parents' tags. Via kill_tags, one may specify tags to be removed completely. Via allow_tags, one may restrict the set of permissible tags, excluding context-switching tags like <svg>, <math> and <noscript>.

References

Affected packages

Ubuntu:24.04:LTS / lxml-html-clean

Package

Name
lxml-html-clean
Purl
pkg:deb/ubuntu/lxml-html-clean?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.1.0-0ubuntu1
0.1.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-lxml-html-clean",
            "binary_version": "0.1.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-52595.json"

Ubuntu:25.10 / lxml-html-clean

Package

Name
lxml-html-clean
Purl
pkg:deb/ubuntu/lxml-html-clean?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.4.1-1
0.4.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-lxml-html-clean",
            "binary_version": "0.4.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-52595.json"

Ubuntu:26.04:LTS / lxml-html-clean

Package

Name
lxml-html-clean
Purl
pkg:deb/ubuntu/lxml-html-clean?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.4.2-1
0.4.3-1
0.4.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-lxml-html-clean",
            "binary_version": "0.4.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-52595.json"