---
id: CVE-2026-100901
title: A vulnerability was found in athlon1600 youtube-downloader up to 4.0.1
summary: >-
  A vulnerability was found in athlon1600 youtube-downloader up to 4.0.1.
  Affected by this vulnerability is the function stream of the file
  public/stream.php. The manipulation of the argument url results in server-side
  request forgery. It …
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-918
vendor: athlon1600
product: youtube-downloader
affected:
  - youtube-downloader 4.0.0
  - youtube-downloader 4.0.1
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T03:16:38.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100901'
references:
  - url: 'https://gist.github.com/qianqiusujiu/87a7d7d8bd7fb53cf8529e0bafbeafba'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-100901'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/919147'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/410851'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/410851/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T03:02:00.411Z'
---

## Overview

A vulnerability was found in athlon1600 youtube-downloader up to 4.0.1. Affected by this vulnerability is the function stream of the file public/stream.php. The manipulation of the argument url results in server-side request forgery. It is possible to launch the attack remotely. The exploit has been made public and could be used. Commit 6ffe823 'better security for public/stream.php' only added CURLOPT_PROTOCOLS http/https restriction and MAXREDIRS cap, does not restrict destination host. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.