SSRF in Athlon1600 Youtube-Downloader
CVE-2026-100901
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Athlon1600 Youtube-Downloader — versions 4.0.0, 4.0.1
Weakness classification (CWE)
References
- vuldb.com/vuln/410851 (technical-description, vdb-entry)
- vuldb.com/vuln/410851/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-100901 (third-party-advisory)
- vuldb.com/submit/919147 (third-party-advisory)
- gist.github.com/qianqiusujiu/87a7d7d8bd7fb53cf8529e0bafbeafba (exploit)
Frequently asked questions
- What is CVE-2026-100901?
- CVE-2026-100901 is a high-severity vulnerability in Athlon1600 Youtube-Downloader, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.3/10. Published 2026-09-28.
- How severe is CVE-2026-100901?
- High severity. CVSS v3 base score is 7.3 out of 10.