---
cve: "CVE-2026-41066"
severity: "HIGH"
cvss: 7.5
epss: "0.3%"
vendor: "lxml"
kev: false
exploited: false
published: "2026-04-24 17:16:20"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T07:41:30+02:00"
---

# CVE-2026-41066

> 7.5 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 43722f4402afa48b7890a96ce012eb0b9b1af5be (Commit)

## Referenzen

- <https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw>
- <https://bugs.launchpad.net/lxml/+bug/2146291>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-41066) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_