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

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Summary

CVECVE-2026-50023
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-23 17:17:03 UTC
Updated2026-06-26 20:12:25 UTC
Descriptionyt-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.

Risk And Classification

Primary CVSS: v3.1 9.6 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS: 0.005550000 probability, percentile 0.420910000 (date 2026-06-29)

Problem Types: CWE-641 | CWE-641 CWE-641: Improper Restriction of Names for Files and Other Resources

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.6CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
3.1[email protected]Secondary8.3HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
3.1CNADECLARED8.3HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Yt-dlp Project Yt-dlp All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Yt-dlp Yt-dlp affected < 2026.06.09 Not specified

References

ReferenceSourceLinkTags
github.com/yt-dlp/yt-dlp/commit/e578e265f7c6ca94a74b30e0d8d6196a4d19fb6a [email protected] github.com Patch
github.com/yt-dlp/yt-dlp/security/advisories/GHSA-c6mh-fpjc-4pr3 [email protected] github.com Exploit, Mitigation, Patch, Vendor Advisory
github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2026.06.09.230517 [email protected] github.com Product, Release Notes
github.com/yt-dlp/yt-dlp/releases/tag/2026.06.09 [email protected] github.com Product, Release Notes
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