Security fix · CVE-2025-43858
YoutubeDLSharp is a wrapper for the command-line video downloaders youtube-dl and yt-dlp.
Published Apr 24, 2025 · corrected/updated Apr 24, 2025 · Bluegrams YoutubeDLSharp · evidence confidence high
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 from a commands prompt running on Windows OS with the 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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2025-43858 is a critical public vulnerability record for Bluegrams YoutubeDLSharp. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Bluegrams YoutubeDLSharp is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Bluegrams YoutubeDLSharp 1.0.0-beta4, < 1.1.2 (1.0.0-beta4, < 1.1.2). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 9.2, EPSS 26.0%. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: euvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Apr 24, 2025 · EUVD
Detected
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 from a commands prompt running on Windows OS with the value defined to true (default behavior). If a user is using built-in methods from the YoutubeDL.cs file,
Apr 24, 2025 · EUVD
Updated
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 from a commands prompt running on Windows OS with the value defined to true (default behavior). If a user is using built-in methods from the YoutubeDL.cs file,
Affected
- vendor Bluegrams YoutubeDLSharp 1.0.0-beta4, < 1.1.21.0.0-beta4, < 1.1.2
Sources
- EUVDVulnerability recordEUVD-2025-11986
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 from a commands prompt running on Windo
euvd.enisa.europa.eu