Improper Restriction of Names for Files and Other Resources Affecting yt-dlp package, versions [,2026.6.9)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published17 Jun 2026
- disclosed16 Jun 2026
- creditPavan Nallamothu
Introduced: 16 Jun 2026
CVE-2026-50023 (opens in a new tab)How to fix?
Upgrade yt-dlp to version 2026.6.9 or higher.
Overview
yt-dlp is an A youtube-dl fork with additional features and patches
Affected versions of this package are vulnerable to Improper Restriction of Names for Files and Other Resources via insufficient sanitization of file extensions during the file download. An attacker can cause arbitrary OS-shortcut files to be written to the user's filesystem by supplying a crafted media playlist or subtitle URI, potentially leading to code execution or phishing attacks if the user opens the malicious file.
Note: This is only exploitable if the user passes options such as --write-subs, --write-auto-subs, --embed-subs, --write-thumbnail, --write-all-thumbnails, or --embed-thumbnail and downloads from untrusted sources.
Workaround
This vulnerability can be mitigated by only passing fully trusted input URLs, avoiding the use of the affected options, and interactively selecting download formats to validate file extensions.