Is CVE-2026-109967 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109967?

CVE-2026-109967 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-109967

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.