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Vulnerabilities / CVE-2025-43858

critical

CVE-2025-43858

YoutubeDLSharp allows command injection on windows system due to non sanitized arguments

Published Modified CWE 77, 78
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA9.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

Trivy's own label is CRITICAL. Rated critical by GHSA.

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.

Affected packages and fixed versions

SourcePackageFixed in
nuget::GitHub Security Advisory NuGetYoutubeDLSharp, youtubedlsharp1.1.2
Show all 2 entries from 1 source
SourcePackageFixed in
nuget::GitHub Security Advisory NuGetYoutubeDLSharp1.1.2
nuget::GitHub Security Advisory NuGetyoutubedlsharp1.1.2

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.