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CVE-2026-50019— yt-dlp: File Downloader cookie leak with curl

Quick assessment

Affected
yt-dlp yt-dlp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

yt-dlp是yt-dlp团队的一个视频下载命令行工具。 yt-dlp 存在信息泄露漏洞，该漏洞源于使用curl作为外部下载器时，cookie可能通过HTTP重定向或下载片段主机不同而泄露至非预期主机。以下版本受到影响：2023.09.24版本至2026.06.09版本。

CVSS 6.1 · Medium EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
yt-dlp yt-dlp >= 2023.09.24, < 2026.06.09 affected
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I. Basic Information for CVE-2026-50019

Vulnerability Information
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Vulnerability Title
yt-dlp: File Downloader cookie leak with curl
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
yt-dlp 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
yt-dlp是yt-dlp团队的一个视频下载命令行工具。 yt-dlp 存在信息泄露漏洞，该漏洞源于使用curl作为外部下载器时，cookie可能通过HTTP重定向或下载片段主机不同而泄露至非预期主机。以下版本受到影响：2023.09.24版本至2026.06.09版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yt-dlp yt-dlp >= 2023.09.24, < 2026.06.09 -

II. Public POCs for CVE-2026-50019

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III. Intelligence Information for CVE-2026-50019

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Vendor Advisories for CVE-2026-50019 (1)

Same Patch Batch · yt-dlp · 2026-06-23 · 3 CVEs total

CVE-2026-50023 8.3 HIGH yt-dlp: Dangerous file type creation via insufficient filename sanitization (Bypass of CVE
CVE-2026-50574 8.3 HIGH yt-dlp: Arbitrary code execution via manifest downloads with aria2c

IV. Related Vulnerabilities

Same product: yt-dlp
Same vendor: yt-dlp
Same weakness: CWE-200

V. Comments for CVE-2026-50019

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