TI-2026-26248 Aliases CVE-2026-33890

MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration

HIGH 80CWE-284Published 2026-03-27 · Updated 2026-03-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00501 43rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed MyTube (franklioxygen): 1.8.71

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
franklioxygen	MyTube	before 1.8.71	1.8.71	Patch available	CNA

MyTube Vendorfranklioxygen Affected before 1.8.71 Fixed in 1.8.71 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:franklioxygen:mytube::::::::	before 1.8.71	Vulnerable	franklioxygen

cpe:2.3:a:franklioxygen:mytube:*:*:*:*:*:*:*:* Versions before 1.8.71 Vulnerable ·franklioxygen

Remediation

Fix · CNA MyTube (franklioxygen) Fixed in 1.8.71

Timeline

2026-10-02 Threatist record created from CVE-2026-33890
2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8

Patch 1

https://github.com/franklioxygen/MyTube/commit/d6c1275a7ff7ffd3d51b53c333237f4d572580ac

TI-2026-26114 MyTube has an Improper Access Control that Allows Complete Application Takeover CVSS 4.0HIGH 7.4
TI-2026-26286 MyTube has Unauthenticated Account Lockout via Shared Login Attempt State CVSS 4.0HIGH 7.7
TI-2026-19200 MyTube has an Authorization Bypass vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-19457 MyTube Allows Unauthorized Database Export by Guest Users CVSS 4.0HIGH 8.7
TI-2026-19211 MyTube has Rate Limiting Bypass via X-Forwarded-For Header Spoofing CVSS 3.1MEDIUM 6.5
TI-2026-19458 MyTube has Mass Assignment via Settings Management CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences