{"id":"CVE-2026-50023","aliases":["GHSA-c6mh-fpjc-4pr3","PYSEC-2026-3430"],"url":"https://o3.security/vulnerability/CVE-2026-50023","summary":"yt-dlp: Dangerous file type creation via insufficient filename sanitization (Bypass of CVE-2024-38519)","details":"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.","published":"2026-06-23T16:08:43.003Z","modified":"2026-08-12T03:51:22.774665754Z","cvss":{"score":8.3,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"},"epss":{"score":0.00665,"percentile":0.49303,"asOf":"2026-09-01"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"yt-dlp","fixedVersion":"2026.6.9"}],"fix":{"url":"https://github.com/yt-dlp/yt-dlp/commit/e578e265f7c6ca94a74b30e0d8d6196a4d19fb6a","label":"yt-dlp/yt-dlp@e578e26"},"references":[{"type":"WEB","url":"https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2026.06.09.230517"},{"type":"WEB","url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2026.06.09"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50023.json"},{"type":"ADVISORY","url":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-c6mh-fpjc-4pr3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50023"},{"type":"FIX","url":"https://github.com/yt-dlp/yt-dlp/commit/e578e265f7c6ca94a74b30e0d8d6196a4d19fb6a"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:22.774665754Z"}}