CVE-2026-90491 sanjevirau gsubs Electron index.js showQuerySuccessPage code injection
Remote attackers can execute arbitrary code via the showQuerySuccessPage function in the gsubs Electron application due to improper handling of the filename argument.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-90491?
CVE-2026-90491 is a medium-severity code injection vulnerability in sanjevirau gsubs, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Which versions are affected by CVE-2026-90491?
How do I fix CVE-2026-90491?
No fix has been published for CVE-2026-90491 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-90491 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90491 exists.
Sources
Also known as GHSA-qcwq-wqp5-v342.