---
id: CVE-2025-66372
title: Mustang before 2.16.3 allows exfiltrating files via XXE attacks.
summary: Mustang before 2.16.3 allows exfiltrating files via XXE attacks.
severity: low
cvss: 2.8
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N'
cwe:
  - CWE-611
published: '2025-11-28'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66372'
references:
  - url: 'https://github.com/ZUGFeRD/mustangproject/issues/685'
    label: cve@mitre.org
  - url: 'https://github.com/ZUGFeRD/mustangproject/pull/725'
    label: cve@mitre.org
  - url: 'https://github.com/ZUGFeRD/mustangproject/releases/tag/core-2.16.3'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00123
epssPercentile: 0.01812
ingestedAt: '2026-09-30T23:29:32.476Z'
---

## Overview

Mustang before 2.16.3 allows exfiltrating files via XXE attacks.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.