---
id: CVE-2026-71212
title: >-
  xidown (a yt-dlp/ffmpeg GUI wrapper) builds its yt-dlp command-line invocation
  (xidown/core/scanner.py and downloader.py) by appending the user-provided or
  scanned URL as a bare trailing positional argument, with no '--'
  end-of-options m…
summary: >-
  xidown (a yt-dlp/ffmpeg GUI wrapper) builds its yt-dlp command-line invocation
  (xidown/core/scanner.py and downloader.py) by appending the user-provided or
  scanned URL as a bare trailing positional argument, with no '--'
  end-of-options m…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L'
cwe:
  - CWE-88
published: '2026-08-05'
updated: '2026-08-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71212'
references:
  - url: 'https://cwe.mitre.org/data/definitions/88.html'
    label: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
tags:
  - nvd
epss: 0.00159
epssPercentile: 0.04228
ingestedAt: '2026-08-10T12:39:48.520Z'
---

## Overview

xidown (a yt-dlp/ffmpeg GUI wrapper) builds its yt-dlp command-line invocation (xidown/core/scanner.py and downloader.py) by appending the user-provided or scanned URL as a bare trailing positional argument, with no '--' end-of-options marker and no scheme validation anywhere in the codebase.

## Remediation

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