Argument Injection Vulnerability in yt-dlp-web-ui from Marco Piovanello
CVE-2026-109966

6.9MEDIUM

Key Information:

Vendor

Marcopiovanello

Status
Yt-dlp-web-ui
Vendor
CVE Published:
13 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-109966?

The yt-dlp-web-ui application through version 4.0.0 is susceptible to an argument injection vulnerability. This allows unauthenticated attackers to inject yt-dlp options by providing a dash-prefixed URL parameter to the Service.Formats JSON-RPC method. For instance, by sending values such as --load-info-json via /rpc/http or /rpc/ws, attackers can manipulate the application to load external JSON files from the server filesystem. The content of these files may be reflected in the application's responses, potentially leading to unauthorized access and information disclosure.

Affected Version(s)

yt-dlp-web-ui 0 <= 4.0.0

References

https://github.com/vazzzy071-crypto/security-advisories/b...
third-party-advisoryexploit
https://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4....
technical-description
https://github.com/marcopiovanello/yt-dlp-web-ui
product

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Miraziz Kuchkarov (VOID)
.