CVE-2026-50019 yt-dlp: File Downloader cookie leak with curl
Attackers can leak user cookies to unintended hosts when using curl as an external downloader in yt-dlp during redirects or fragment downloads.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-50019?
CVE-2026-50019 is a medium-severity vulnerability in yt-dlp, published on 23 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
yt-dlp is a command-line audio/video downloader. From 2023.09.24 until 2026.06.09, if curl is used as an external downloader for yt-dlp, cookies may be leaked to an unintended host upon HTTP redirect or when the host for download fragments differs from their parent manifest's. At the file download stage, the cookies are passed by yt-dlp to the file downloader via --cookie. However, unless these are loaded from a file, this operation does not activate the cookie engine. As a result, curl will send cookies with requests to domains or paths for which the cookies are not scoped. This vulnerability is fixed in 2026.06.09.
Weakness: CWE-200
Which versions are affected by CVE-2026-50019?
3 open source packages ship an affected version, including yt-dlp. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
yt-dlp PyPI | From 2023.9.24 | 2026.6.9 |
yt-dlp PyPI | From 2023.9.24 | 2026.6.9 |
yt-dlp PyPI | From 2023.9.24 | 2026.6.9 |
Products include Yt-Dlp Project Yt-Dlp.
How do I fix CVE-2026-50019?
Upgrade yt-dlp to 2026.6.9 or later.
Is CVE-2026-50019 being exploited?
There is no known exploitation of CVE-2026-50019 in the wild and no public exploit code.
Other vulnerabilities in yt-dlp
- CVE-2026-26331 yt-dlp: Arbitrary Command Injection when using the `--netrc-cmd` option
- CVE-2024-22423 yt-dlp `--exec` command injection when using `%q` in yt-dlp on Windows
- CVE-2023-40581 yt-dlp command injection when using `%q` in `--exec` on Windows
- CVE-2026-50023 yt-dlp: Dangerous file type creation via insufficient filename sanitization (Bypass of CVE-2024-38519)
- CVE-2026-50574 yt-dlp: Arbitrary code execution via manifest downloads with aria2c
Sources
Also known as DEBIAN-CVE-2026-50019, GHSA-f7j3-774f-rfhj, PYSEC-2026-3431, UBUNTU-CVE-2026-50019.