CVE-2026-109966: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in marcopiovanello yt-dlp-web-ui
Description
yt-dlp-web-ui through 4.0.0 contains an argument injection vulnerability that allows unauthenticated remote attackers to inject yt-dlp options by supplying a dash-prefixed url parameter to the Service.Formats JSON-RPC method. Attackers can send values like --load-info-json via /rpc/http or /rpc/ws to make yt-dlp load attacker-chosen JSON files from the server filesystem, with contents reflected in responses.
CVSS v4.0
Score 6.9medium
Affected software
marcopiovanello
yt-dlp-web-ui
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-13T11:26:13.465Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace3de02cdf04f656720e7a
Added to database: 10/13/2026, 14:19:12 UTC
Last updated: 10/13/2026, 14:19:12 UTC
Views: 1
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