CVE-2024-22423

yt-dlp is a youtube-dl fork with additional features and fixes. The patch that addressed CVE-2023-40581 attempted to prevent RCE when using `--exec` with `%q` by replacing double quotes with two double quotes. However, this escaping is not sufficient, and still allows expansion of environment variables. Support for output template expansion in `--exec`, along with this vulnerable behavior, was added to `yt-dlp` in version 2021.04.11. yt-dlp version 2024.04.09 fixes this issue by properly escaping `%`. It replaces them with `%%cd:~,%`, a variable that expands to nothing, leaving only the leading percent. It is recommended to upgrade yt-dlp to version 2024.04.09 as soon as possible. Also, always be careful when using `--exec`, because while this specific vulnerability has been patched, using unvalidated input in shell commands is inherently dangerous. For Windows users who are not able to upgrade, avoid using any output template expansion in `--exec` other than `{}` (filepath); if expansion in `--exec` is needed, verify the fields you are using do not contain `"`, `|` or `&`; and/or instead of using `--exec`, write the info json and load the fields from it instead.

• CWE-78

• https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6ePatch
• https://github.com/yt-dlp/yt-dlp/commit/ff07792676f404ffff6ee61b5638c9dc1a33a37aPatch
• https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11Product, Release Notes
• https://github.com/yt-dlp/yt-dlp/releases/tag/2024.04.09Product, Release Notes
• https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qgNot Applicable
• https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-hjq6-52gw-2g7pExploit, Vendor Advisory
• https://www.kb.cert.org/vuls/id/123335Third Party Advisory
• https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6ePatch
• https://github.com/yt-dlp/yt-dlp/commit/ff07792676f404ffff6ee61b5638c9dc1a33a37aPatch
• https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11Product, Release Notes
• https://github.com/yt-dlp/yt-dlp/releases/tag/2024.04.09Product, Release Notes
• https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qgNot Applicable
• https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-hjq6-52gw-2g7pExploit, Vendor Advisory
• https://www.kb.cert.org/vuls/id/123335Third Party Advisory

Published

Apr 9, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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