High 7.5Published Oct 13, 2026

CVE-2026-109967yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formats

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects marcopiovanello yt-dlp-web-ui. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.56%, higher than 46% of scored CVEs.

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Every CVE for marcopiovanello yt-dlp-web-ui

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.56% (percentile 46)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 13, 2026

Affected products

Affected products

marcopiovanello yt-dlp-web-ui marcopiovanello:yt_dlp_web_ui (from the name)	through 4.0.0	CNA record

References

https://github.com/vazzzy071-crypto/security-advisories/blob/main/advisories/2026-10-marcopiovanello-yt-dlp-web-ui-rpc-arg-injection.mdthird-party-advisory, exploit
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
https://www.vulncheck.com/advisories/yt-dlp-web-ui-through-4.0.0-null-pointer-dereference-dos-via-service-formatsthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.