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CVE-2026-41066 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugs.launchpad.net/lxml/+bug/2146291	[email protected]	ExploitIssue TrackingThird Party Advisory
https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw	[email protected]	MitigationVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-611	Improper Restriction of XML External Entity Reference	[email protected]

Affected Products

Product	Versions
lxml lxml	< 6.1.0
CPE cpe:2.3:a:lxml:lxml:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 27, 2026	Initial Analysis	[email protected]
Apr 24, 2026	New CVE Received	[email protected]