Improper Authorization in Nerimity Desktop's Custom URL Scheme Handling
CVE-2026-113411

5.3MEDIUM

Key Information:

Vendor

Nerimity

Status
Desktop
Vendor
CVE Published:
20 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-113411?

A vulnerability exists in Nerimity Desktop versions up to 2.2.2, where the function shell.openExternal in src/mainWindow.js fails to properly authorize the handling of custom URL schemes. This flaw allows for remote exploitation, as it allows unauthorized actions through manipulated URL arguments. Users are strongly advised to upgrade to version 2.3.3, which includes a patch identified as f4df21bbc290f6c1956d899cf4da9e963074a6e4, to mitigate this vulnerability.

Affected Version(s)

Desktop 2.2.0

Desktop 2.2.1

Desktop 2.2.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-113411 - Proof of Concept

References

https://vuldb.com/vuln/422677
vdb-entrytechnical-description
https://vuldb.com/vuln/422677/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-113411
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

NeoWSY (VulDB User)
VulDB CNA Team
.