CVE-2026-109967
yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formats
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 13, 2026
- Updated
- Oct 16, 2026
- Reserved
- Oct 13, 2026
Description
yt-dlp-web-ui through 4.0.0 contains a NULL pointer dereference vulnerability in the Service.Formats JSON-RPC method that allows remote unauthenticated attackers to crash the server. Attackers can send a single request with a url value like --version, causing invalid yt-dlp JSON output and an unrecovered panic that terminates the process.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-476 NULL Pointer Dereference
Affected Products
| Product | Versions |
|---|---|
yt-dlp-web-uimarcopiovanello |
|
References
- https://github.com/vazzzy071-crypto/security-advisories/blob/main/advisories/2026-10-marcopiovanello-yt-dlp-web-ui-rpc-arg-injection.mdthird-party-advisoryexploit
- https://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/rpc/service.gotechnical-description
- https://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/formats/parser.gotechnical-description
- https://github.com/marcopiovanello/yt-dlp-web-uiproduct
- VulnCheck Advisory: yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formatsthird-party-advisory
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