Vulnerability · Published Sep 13, 2026 · Assigned by VulDB

CVE-2026-90491sanjevirau gsubs Electron index.js showQuerySuccessPage code injection

Medium 6.3

In plain English

A medium-severity code injection in gsubs from sanjevirau. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.4%top 63.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in sanjevirau gsubs up to 1.0.3. Impacted is the function showQuerySuccessPage of the file renderer/index.js of the component Electron. Executing a manipulation of the argument filename can lead to code injection. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
sanjevirau	gsubs	1.0.01.0.11.0.21.0.3

Weakness: CWE-94, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-403079 | sanjevirau gsubs Electron index.js showQuerySuccessPage code injection vdb-entry, technical-description
VDB-403079 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-90491 | CVE Analysis and Report third-party-advisory
Submit #891691 | sanjevirau gsubs 1.0.3 Code Injection third-party-advisory
https://github.com/LeoWSY-hashblue/cve-electron-2/blob/master/gsubs/cve.md related
https://github.com/LeoWSY-hashblue/cve-electron-2/tree/master/gsubs/poc exploit