Code Injection Vulnerability in sanjevirau gsubs by Electron
CVE-2026-90491

5.3MEDIUM

Key Information:

Vendor

Sanjevirau

Status
Gsubs
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90491?

A code injection vulnerability exists in the sanjevirau gsubs product, specifically in the function showQuerySuccessPage within the renderer/index.js file. By manipulating the argument 'filename', an attacker can execute arbitrary code remotely. The potential exploit has been publicly disclosed, making it essential for users to implement necessary security measures promptly. The vendor has been notified about the issue but has not responded to the inquiry.

Affected Version(s)

gsubs 1.0.0

gsubs 1.0.1

gsubs 1.0.2

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-2026-90491 - Proof of Concept

References

https://vuldb.com/vuln/403079
vdb-entrytechnical-description
https://vuldb.com/vuln/403079/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90491
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
.