franklioxygen MyTube up to 1.7.65 /api/settings next authorization

Summaryinfo

A vulnerability marked as critical has been reported in franklioxygen MyTube up to 1.7.65. Impacted is the function Next of the file /api/settings. This manipulation causes authorization. This vulnerability appears as CVE-2026-23837. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in franklioxygen MyTube up to 1.7.65. It has been declared as critical. Affected by this vulnerability is the function next of the file /api/settings. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

MyTube is a self-hosted downloader and player for several video websites. A vulnerability present in version 1.7.65 and poetntially earlier versions allows unauthenticated users to bypass the mandatory authentication check in the roleBasedAuthMiddleware. By simply not providing an authentication cookie (making req.user undefined), a request is incorrectly passed through to downstream handlers. All users running MyTube with loginEnabled: true are impacted. This flaw allows an attacker to access and modify application settings via /api/settings, change administrative and visitor passwords, and access other protected routes that rely on this specific middleware. The problem is patched in v1.7.66. MyTube maintainers recommend all users upgrade to at least version v1.7.64 immediately to secure their instances. The fix ensures that the middleware explicitly blocks requests if a user is not authenticated, rather than defaulting to next(). Those who cannot upgrade immediately can mitigate risk by restricting network access by usi a firewall or reverse proxy (like Nginx) to restrict access to the /api/ endpoints to trusted IP addresses only or, if they are comfortable editing the source code, manually patch by locating roleBasedAuthMiddleware and ensuring that the logic defaults to an error (401 Unauthorized) when req.user is undefined, instead of calling next().

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-23837 since 01/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.7.66 eliminates this vulnerability. Applying the patch f85ae9b0d6e4a6480c6af5b675a99069d08d496e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-3289). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• franklioxygen

Name

• MyTube

Version

• 1.7.0
• 1.7.1
• 1.7.2
• 1.7.3
• 1.7.4
• 1.7.5
• 1.7.6
• 1.7.7
• 1.7.8
• 1.7.9
• 1.7.10
• 1.7.11
• 1.7.12
• 1.7.13
• 1.7.14
• 1.7.15
• 1.7.16
• 1.7.17
• 1.7.18
• 1.7.19
• 1.7.20
• 1.7.21
• 1.7.22
• 1.7.23
• 1.7.24
• 1.7.25
• 1.7.26
• 1.7.27
• 1.7.28
• 1.7.29
• 1.7.30
• 1.7.31
• 1.7.32
• 1.7.33
• 1.7.34
• 1.7.35
• 1.7.36
• 1.7.37
• 1.7.38
• 1.7.39
• 1.7.40
• 1.7.41
• 1.7.42
• 1.7.43
• 1.7.44
• 1.7.45
• 1.7.46
• 1.7.47
• 1.7.48
• 1.7.49
• 1.7.50
• 1.7.51
• 1.7.52
• 1.7.53
• 1.7.54
• 1.7.55
• 1.7.56
• 1.7.57
• 1.7.58
• 1.7.59
• 1.7.60
• 1.7.61
• 1.7.62
• 1.7.63
• 1.7.64
• 1.7.65

License

• open-source

Website

• Product: https://github.com/franklioxygen/MyTube/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion