CVE-2026-33890
MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration
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.
INFO
Published Date :
March 27, 2026, 1:16 a.m.
Last Modified :
April 1, 2026, 1:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update MyTube to version 1.8.71.
- Ensure passkey registration requires authentication.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33890.
| URL | Resource |
|---|---|
| https://github.com/franklioxygen/MyTube/commit/d6c1275a7ff7ffd3d51b53c333237f4d572580ac | Patch |
| https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8 | Exploit Vendor Advisory |
| https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33890 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33890
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33890 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33890 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 01, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:franklioxygen:mytube:*:*:*:*:*:*:*:* versions up to (excluding) 1.8.71 Added Reference Type GitHub, Inc.: https://github.com/franklioxygen/MyTube/commit/d6c1275a7ff7ffd3d51b53c333237f4d572580ac Types: Patch Added Reference Type GitHub, Inc.: https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8 Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 27, 2026
Action Type Old Value New Value Added Reference https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8 -
New CVE Received by [email protected]
Mar. 27, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-284 Added Reference https://github.com/franklioxygen/MyTube/commit/d6c1275a7ff7ffd3d51b53c333237f4d572580ac Added Reference https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8