CVE-2026-90491 Details
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.
A code injection vulnerability has been identified in Sanjevirau Gsubs versions through 1.0.3, specifically within the Electron component. The issue arises in the 'showQuerySuccessPage' function of 'renderer/index.js', where subtitle filenames from the OpenSubtitles API are rendered into the DOM without proper HTML escaping. This flaw allows for the injection of malicious scripts that can be executed in the context of the user running the application. The vulnerability is exacerbated by the fact that the Electron application has Node.js integration enabled, allowing injected code to execute arbitrary commands on the operating system.
Users are advised to upgrade to a version of Gsubs that uses a patched Electron version with 'nodeIntegration' disabled and 'contextIsolation' enabled. Additionally, all external data should be HTML-escaped before being inserted into the DOM.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 13, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/LeoWSY-hashblue/cve-electron-2/blob/master/gsubs/cve.md | [email protected] | ExploitRemedyTechnical Analysis |
| https://github.com/LeoWSY-hashblue/cve-electron-2/tree/master/gsubs/poc | [email protected] | ExploitSource Code |
| https://vuldb.com/cve/CVE-2026-90491 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/891691 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/403079 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/403079/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| sanjevirau gsubs | 1.0.3 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 13, 2026 | New CVE Received | [email protected] |