CVE-2026-41066

Published: Apr 24, 2026Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Lxml: Lxml

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Lxml Lxml	Before 6.1.0

Related CWEs

Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

References (2)

https://bugs.launchpad.net/lxml/+bug/2146291

Source: security-advisories@github.com

ExploitIssue TrackingThird Party Advisory

https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw

Source: security-advisories@github.com

MitigationVendor Advisory

Timeline

No history available yet.