CVE-2025-43858

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-04-24 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 09:24 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 9.2 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2025-04-24 18:15 UTC

Last modified

2026-06-17 09:24 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-77 · Command injection

Record status

Deferred

Attack profile CVSS 3.1 · 9.2

Attack vector

Local

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2025-43858.md and follow it. Check whether this project is affected by CVE-2025-43858. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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