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Fencer Vulns
high 8.3

CVE-2026-50574 json

yt-dlp: Arbitrary code execution via manifest downloads with aria2c

published 2026-06-16 4 mo ago modified 2026-07-20 3 mo ago also EUVD-2026-38495 , GHSA-vx4q-3cr2-7cg2 , PYSEC-2026-3433

cvss
8.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi yt-dlp 2026.6.9
  • youtube-dlc_project youtube-dlc 2026.06.09
  • yt-dl youtube-dl 2026.06.09
  • yt-dlp-nightly-builds_project yt-dlp-nightly-builds 2026.06.09
  • yt-dlp_project yt-dlp 2026.06.09
  • yt-dlp Debian 14 2026.06.09-1

debian advisories DEBIAN-CVE-2026-50574

  • yt-dlp openSUSE Leap 16.0 2026.06.09-bp160.1.1
  • yt-dlp openSUSE Tumbleweed 2026.06.09-1.1

opensuse advisories openSUSE-SU-2026:21163-1openSUSE-SU-2026:11019-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-50574 updated cvss 9.6

yt-dlp: arbitrary code execution via manifest downloads with aria2c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
GitHub 3.1 8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
OSV 3.1 8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi yt-dlp
<2026.6.9
2026.6.9

Affected products

  • yt-dlp yt-dlp

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.