CVE-2026-109967: high-severity vulnerability in marcopiovanello yt-dlp-web-ui
yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formats
Published · Updated
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41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.6%
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.
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
Affected products
marcopiovanello · yt-dlp-web-uipublic PoCs found — 1
cve_referencegithub.com/vazzzy071-crypto/security-advisories/blob/main/advisories/2026-10-marcopiovanello-yt-dlp-web-ui-rpc-arg-injection.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — marcopiovanello yt-dlp-web-ui
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References
https://github.com/marcopiovanello/yt-dlp-web-uihttps://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/formats/parser.gohttps://github.com/marcopiovanello/yt-dlp-web-ui/blob/v4.0.0/server/rpc/service.gohttps://github.com/vazzzy071-crypto/security-advisories/blob/main/advisories/2026-10-marcopiovanello-yt-dlp-web-ui-rpc-arg-injection.mdhttps://www.vulncheck.com/advisories/yt-dlp-web-ui-through-4.0.0-null-pointer-dereference-dos-via-service-formats