# CVE-2026-41066

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## 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.

## Key facts

- **CVE ID:** CVE-2026-41066
- **Published:** 2026-04-24
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-611

## Affected products

- `lxml:lxml`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41066

## Citation

> AI Analytics. CVE-2026-41066. Retrieved 2026-08-10 from https://api.ai-analytics.org/cve/CVE-2026-41066. Derived from NIST NVD. Licensed CC0.

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