What is CVE-2026-50574?

CVE-2026-50574 is a high-severity vulnerability in Yt-Dlp, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.3/10. Published 2026-06-23.

How severe is CVE-2026-50574?

High severity. CVSS v3 base score is 8.3 out of 10.

Vulnerability in Yt-Dlp

CVE-2026-50574

yt-dlp is a command-line audio/video downloader. Prior to 2026.06.09, 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. This vulnerability is fixed in 2026.06.09.

EPSS: 0.005 (39.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Yt-dlp — versions < 2026.06.09
Yt-dlp_project Yt-dlp

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-50574?: CVE-2026-50574 is a high-severity vulnerability in Yt-Dlp, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.3/10. Published 2026-06-23.
How severe is CVE-2026-50574?: High severity. CVSS v3 base score is 8.3 out of 10.