CVE-2026-109967

HIGH 7.5

yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formats

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476
Vendor	marcopiovanello
Product	yt-dlp-web-ui
Published	Oct 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

marcopiovanello / yt-dlp-web-ui

0 ≤ 4.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/vazzzy071-crypto/security-advisories/blob/main/advisories/2026-10-marcopiovanello-yt-dlp-web-ui-rpc-arg-injection.md github.com: https://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/rpc/service.go github.com: https://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/formats/parser.go github.com: https://github.com/marcopiovanello/yt-dlp-web-ui vulncheck.com: https://www.vulncheck.com/advisories/yt-dlp-web-ui-through-4.0.0-null-pointer-dereference-dos-via-service-formats

Credits

Miraziz Kuchkarov (VOID)