CVE-2026-112303 Details
Description
GDevelop desktop app through 5.6.284 contains a credential leak vulnerability that allows attackers to steal the gd_resource cookie by supplying attacker-controlled resource URLs in project files. Attackers can get victims to open a crafted project, causing downloadLocalFile() to send the cookie to their server and expose private cloud project resources.
A credential leak vulnerability has been identified in the GDevelop desktop application, affecting versions through 5.6.284. This vulnerability allows attackers to steal the 'gd_resource' cookie by embedding malicious resource URLs in project files. When a victim opens the compromised project, the 'downloadLocalFile()' function is triggered, sending the cookie to the attacker's server and exposing private cloud project resources.
Users can update to GDevelop version 5.6.285 or later, where this vulnerability has been fixed.
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 Oct 19, 2026CISA-ADP
Assessed Oct 19, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/4ian/GDevelop/blob/v5.6.284/newIDE/app/src/ProjectsStorage/LocalFileStorageProvider/LocalFileResourceMover.js | [email protected] | Source CodeVendor |
| https://github.com/4ian/GDevelop/blob/v5.6.284/newIDE/electron-app/app/LocalFileDownloader.js | [email protected] | Source CodeVendor |
| https://github.com/4ian/GDevelop/commit/fbb01f40a640c35c6064f827065eda00e5608690 | [email protected] | Source CodeVendor |
| https://github.com/4ian/GDevelop/issues/9257 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://www.vulncheck.com/advisories/gdevelop-through-5.6.284-cookie-leak-via-localfiledownloader-resource-urls | [email protected] | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-522 | Insufficiently Protected Credentials | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| GDevelop | <= 5.6.284 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 19, 2026 | CVE Modified | CISA-ADP |
| Oct 19, 2026 | New CVE Received | [email protected] |