Nerimity Desktop up to 2.2.2 Window Open src/mainWindow.js shell.openExternal url improper authorization in handler for custom url scheme

Summaryinfo

A vulnerability has been found in Nerimity Desktop up to 2.2.2 and classified as critical. This affects the function shell.openExternal of the file src/mainWindow.js of the component Window Open Handler. This manipulation of the argument url causes improper authorization in handler for custom url scheme. This vulnerability is tracked as CVE-2026-113411. The attack is possible to be carried out remotely. Moreover, an exploit is present. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability classified as critical was found in Nerimity Desktop up to 2.2.2. Affected by this vulnerability is the function shell.openExternal of the file src/mainWindow.js of the component Window Open Handler. The manipulation of the argument url with an unknown input leads to a improper authorization in handler for custom url scheme vulnerability. The CWE definition for the vulnerability is CWE-939. The product uses a handler for a custom URL scheme, but it does not properly restrict which actors can invoke the handler using the scheme. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-113411. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Upgrading to version 2.3.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f4df21bbc290f6c1956d899cf4da9e963074a6e4 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.

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Productinfo

Vendor

• Nerimity

Name

• Desktop

Version

• 2.2.0
• 2.2.1
• 2.2.2

License

• open-source

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CPE 2.2info

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Submitinfo

Accepted

• Submit #1013190: Nerimity nerimity-desktop 2.2.0 / commit fb9c56c97 Code Injection (by NeoWSY)

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