HighFix available
libxml2 — security advisory
A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.
- Products
- libxml2
- Affected versions
- 2.12.7+dfsg+really2.9.14-2.1, 2.13.1+dfsg-0exp1, 2.13.3+dfsg-0exp1, 2.13.3+dfsg-0exp2, 2.14.1+dfsg-0exp1, 2.14.2+dfsg-0exp1, 2.14.3+dfsg-0exp1, 2.14.3+dfsg-0exp2, 2.14.3+dfsg-0exp3, 2.14.4+dfsg-0exp1, 2.14.5+dfsg-0.1, 2.14.5+dfsg-0.2, 2.14.5+dfsg-0exp1, 2.14.5+dfsg-0exp2, 2.14.6+dfsg-0.1, 2.15.0+dfsg-0.1, 2.15.0+dfsg-0.2, 2.15.0+dfsg-0.3, 2.15.1+dfsg-0.1, 2.15.1+dfsg-0.2, 2.15.1+dfsg-0.3, 2.15.1+dfsg-0.4, 2.15.1+dfsg-0.5, 2.15.1+dfsg-1, 2.15.1+dfsg-2, 2.15.2+dfsg-0.1
- Fixed versions
- 2.15.3+dfsg-1
- CVEs
- CVE-2026-6732
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:39 UTC · Revision 2
Source evidence
A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.
osv:DEBIAN-CVE-2026-6732
libxml2
Fixed versions: 2.15.3+dfsg-1
Complete source record
{
"id": "a75266020446325e44059241255f576d9e7254b6696756ef1f9534f907f258a3",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-6732",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-6732",
"summary": "A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.",
"evidence": "osv:DEBIAN-CVE-2026-6732",
"products": [
{
"name": {
"value": "libxml2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.15.3+dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "2.12.7+dfsg+really2.9.14-2.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.13.1+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.13.3+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.13.3+dfsg-0exp2",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.1+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.2+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.3+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.3+dfsg-0exp2",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.3+dfsg-0exp3",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.4+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.5+dfsg-0.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.5+dfsg-0.2",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.5+dfsg-0exp1",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.5+dfsg-0exp2",
"evidence": "/affected/0/versions"
},
{
"value": "2.14.6+dfsg-0.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.0+dfsg-0.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.0+dfsg-0.2",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.0+dfsg-0.3",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-0.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-0.2",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-0.3",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-0.4",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-0.5",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.1+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.15.2+dfsg-0.1",
"evidence": "/affected/0/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-6732",
"aliases": [
"DEBIAN-CVE-2026-6732"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.15.3+dfsg-1"
}
]
}
],
"package": {
"name": "libxml2",
"purl": "pkg:deb/debian/libxml2?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.12.7+dfsg+really2.9.14-2.1",
"2.13.1+dfsg-0exp1",
"2.13.3+dfsg-0exp1",
"2.13.3+dfsg-0exp2",
"2.14.1+dfsg-0exp1",
"2.14.2+dfsg-0exp1",
"2.14.3+dfsg-0exp1",
"2.14.3+dfsg-0exp2",
"2.14.3+dfsg-0exp3",
"2.14.4+dfsg-0exp1",
"2.14.5+dfsg-0.1",
"2.14.5+dfsg-0.2",
"2.14.5+dfsg-0exp1",
"2.14.5+dfsg-0exp2",
"2.14.6+dfsg-0.1",
"2.15.0+dfsg-0.1",
"2.15.0+dfsg-0.2",
"2.15.0+dfsg-0.3",
"2.15.1+dfsg-0.1",
"2.15.1+dfsg-0.2",
"2.15.1+dfsg-0.3",
"2.15.1+dfsg-0.4",
"2.15.1+dfsg-0.5",
"2.15.1+dfsg-1",
"2.15.1+dfsg-2",
"2.15.2+dfsg-0.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6732.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:30.002556531Z",
"provider": "osv",
"upstream": [
"CVE-2026-6732"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-6732"
]
},
"related_cves": [
{
"value": "CVE-2026-6732",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460960,
"published_at": "2026-04-23T23:16:16.443+00:00"
}