CVE-2026-50574: yt-dlp: Arbitrary code execution via manifest downloads with aria2c
If aria2c is used as an external downloader for a fragmented manifest format (such as an HLS/DASH stream), yt-dlp passes insufficiently sanitized input to aria2c that allows an attacker to perform an arbitrary file write. On Windows platforms, this can lead to immediate arbitrary code execution. On non-Windows platforms, this can lead to arbitrary code execution upon the next invocation of yt-dlp.
References
- github.com/advisories/GHSA-vx4q-3cr2-7cg2
- github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2026.06.09.230517
- github.com/yt-dlp/yt-dlp/commit/25056f0d2d47adbd235a8d422fa62d68d0be2bc2
- github.com/yt-dlp/yt-dlp/releases/tag/2026.06.09
- github.com/yt-dlp/yt-dlp/security/advisories/GHSA-vx4q-3cr2-7cg2
- nvd.nist.gov/vuln/detail/CVE-2026-50574
Code Behaviors & Features
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