CVE-2025-43858

CriticalCVSS 9.2/10Last modified Jun 17, 2026

Description

YoutubeDLSharp is a wrapper for the command-line video downloaders youtube-dl and yt-dlp. In versions starting from 1.0.0-beta4 and prior to 1.1.2, an unsafe conversion of arguments allows the injection of a malicious commands when starting `yt-dlp` from a commands prompt running on Windows OS with the `UseWindowsEncodingWorkaround` value defined to true (default behavior). If a user is using built-in methods from the YoutubeDL.cs file, the value is true by default and a user cannot disable it from these methods. This issue has been patched in version 1.1.2.

Metrics

CVSS 3.1 9.2/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

Weakness enumeration

CWE-77 CWE-78

Affected software

No affected versions have been published.

Timeline

Published: Apr 24, 2025
Last modified: Jun 17, 2026
NVD status: Deferred

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