CVE-2026-33890 HIGH

CVE-2026-33890: MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration

Vendor Franklioxygen
Product MyTube
Weakness CWE-284
Published March 27, 2026
Last update March 27, 2026

CVSS base score

8.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.71, an unauthenticated attacker can register an arbitrary passkey and subsequently authenticate with it to obtain a full admin session. The application exposes passkey registration endpoints without requiring prior authentication. Any successfully authenticated passkey is automatically granted an administrator token, allowing full administrative access to the application. This enables a complete compromise of the application without requiring any existing credentials. Version 1.8.71 fixes the issue.

Key dates

02Disclosure timeline

March 27, 2026 CVE published
March 27, 2026 Record updated

Related vulnerabilities

04Related CVE