2024-11-19 23:03:24 +00:00

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{
"id": "CVE-2024-52595",
"sourceIdentifier": "security-advisories@github.com",
"published": "2024-11-19T22:15:21.120",
"lastModified": "2024-11-19T22:15:21.120",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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>`."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "security-advisories@github.com",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"availabilityImpact": "HIGH",
"baseScore": 7.7,
"baseSeverity": "HIGH"
},
"exploitabilityScore": 2.2,
"impactScore": 5.5
}
]
},
"weaknesses": [
{
"source": "security-advisories@github.com",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-184"
},
{
"lang": "en",
"value": "CWE-79"
},
{
"lang": "en",
"value": "CWE-83"
}
]
}
],
"references": [
{
"url": "https://github.com/fedora-python/lxml_html_clean/commit/c5d816f86eb3707d72a8ecf5f3823e0daa1b3808",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/fedora-python/lxml_html_clean/pull/19",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-5jfw-gq64-q45f",
"source": "security-advisories@github.com"
}
]
}