CVE-2026-33890 MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration
Unauthenticated attackers can register passkeys to gain full admin access, compromising the MyTube application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33890?
CVE-2026-33890 is a high-severity authentication bypass vulnerability in franklioxygen MyTube, published on 27 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-284
Which versions are affected by CVE-2026-33890?
It affects 1 product.
Products include Franklioxygen Mytube.
How do I fix CVE-2026-33890?
No fix has been published for CVE-2026-33890 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-33890 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33890 exists.
Other vulnerabilities in franklioxygen MyTube
- CVE-2026-23837 MyTube has an Authorization Bypass vulnerability
- CVE-2026-24139 MyTube Allows Unauthorized Database Export by Guest Users
- CVE-2026-33935 MyTube has Unauthenticated Account Lockout via Shared Login Attempt State
- CVE-2026-33735 MyTube has an Improper Access Control that Allows Complete Application Takeover
- CVE-2026-23848 MyTube has Rate Limiting Bypass via X-Forwarded-For Header Spoofing
Sources
Also known as GHSA-378w-xh68-qrc8.