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

Quick assessment

Affected
marcopiovanello yt-dlp-web-ui
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 yt-dlp-web-ui 4.0.0 及更早版本中，Service.Formats JSON-RPC 方法存在一个空指针解引用漏洞。远程未经身份验证的攻击者可以利用该漏洞使服务器崩溃。攻击者只需发送一个包含类似 --version 的 url 值的请求，即可导致 yt-dlp 输出无效的 JSON 结果，进而引发未被捕获的 panic 异常，最终终止进程。

CVSS 7.5 · High EPSS 0.56% · P45

Affected Version Matrix 1

VendorProduct Version RangeStatus
marcopiovanello yt-dlp-web-ui ≤ 4.0.0 affected
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I. Basic Information for CVE-2026-109967

Vulnerability Information
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Vulnerability Title
yt-dlp-web-ui through 4.0.0 NULL Pointer Dereference DoS via Service.Formats
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
marcopiovanello yt-dlp-web-ui 0 ~ 4.0.0 -

II. Public POCs for CVE-2026-109967

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III. Intelligence Information for CVE-2026-109967

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Vendor Advisories for CVE-2026-109967 (2)

Other References for CVE-2026-109967 (1)

IV. Related Vulnerabilities

Same product: yt-dlp-web-ui
Same vendor: marcopiovanello
Same weakness: CWE-476

V. Comments for CVE-2026-109967

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