HighFix available
lxml — security advisory
lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities='internal' or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.
- Products
- lxml
- Affected versions
- 3.2.0-1, 3.3.0~beta2-1, 3.3.0~beta4-1, 3.3.1-1, 3.3.2-1, 3.3.2-1build1, 3.3.3-1, 3.3.3-1ubuntu0.1, 3.3.3-1ubuntu0.2, 3.3.3-1ubuntu0.2+esm1, 3.3.3-1ubuntu0.2+esm2, 3.3.3-1ubuntu0.2+esm3, 3.3.3-1ubuntu0.2+esm5, 3.4.4-1, 3.5.0-1, 3.5.0-1build1, 3.5.0-1ubuntu0.1, 3.5.0-1ubuntu0.2, 3.5.0-1ubuntu0.3, 3.5.0-1ubuntu0.4, 3.5.0-1ubuntu0.4+esm2, 4.0.0-1, 4.1.0-1, 4.2.0-1, 4.2.1-1, 4.2.1-1ubuntu0.1, 4.2.1-1ubuntu0.2, 4.2.1-1ubuntu0.3, 4.2.1-1ubuntu0.4, 4.2.1-1ubuntu0.6, 4.4.1-1, 4.4.1-1build1, 4.4.2-1, 4.5.0-1, 4.5.0-1ubuntu0.1, 4.5.0-1ubuntu0.2, 4.5.0-1ubuntu0.3, 4.5.0-1ubuntu0.5, 4.6.3+dfsg-0.1, 4.6.4-1, 4.6.4-1ubuntu1, 4.7.1-1, 4.8.0-1, 4.8.0-1build1, 4.9.3-1, 4.9.3-1build1, 4.9.4-1, 5.1.0-1, 5.1.0-1build1, 5.1.0-1build2, 5.2.1-1, 5.3.2-1, 5.4.0-1, 5.4.0-1build1, 6.0.1-1, 6.0.1-1build1, 6.0.2-1, 6.0.2-1build1
- Fixed versions
- 3.3.3-1ubuntu0.2+esm6, 3.5.0-1ubuntu0.4+esm3, 4.2.1-1ubuntu0.6+esm1, 4.5.0-1ubuntu0.5+esm1, 4.8.0-1ubuntu0.1, 5.2.1-1ubuntu0.2, 6.0.2-1ubuntu0.1
- CVEs
- CVE-2026-41066
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 10:04 UTC · Revision 1
Source evidence
lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities='internal' or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.
osv:UBUNTU-CVE-2026-41066
lxml
Fixed versions: 3.3.3-1ubuntu0.2+esm6
lxml
Fixed versions: 3.5.0-1ubuntu0.4+esm3
lxml
Fixed versions: 4.2.1-1ubuntu0.6+esm1
lxml
Fixed versions: 4.5.0-1ubuntu0.5+esm1
lxml
Fixed versions: 4.8.0-1ubuntu0.1
lxml
Fixed versions: 5.2.1-1ubuntu0.2
lxml
Fixed versions: Not specified
lxml
Fixed versions: 6.0.2-1ubuntu0.1
Complete source record
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"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-41066",
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},
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],
"modified": "2026-10-08T19:47:07.088391450Z",
"provider": "osv",
"upstream": [
"CVE-2026-41066"
],
"references": [
"https://ubuntu.com/security/CVE-2026-41066",
"https://www.cve.org/CVERecord?id=CVE-2026-41066",
"https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw",
"https://bugs.launchpad.net/lxml/+bug/2146291",
"https://ubuntu.com/security/notices/USN-8897-1"
]
},
"related_cves": [
{
"value": "CVE-2026-41066",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 104537,
"published_at": "2026-04-24T17:16:00+00:00"
}