CVE-2026-112303

Medium

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.

SeverityMedium

CVSS4.3

Exploit probability—

ProductGDevelop

PublishedOct 19, 2026

First seenOct 19, 2026

Weakness typeCWE-522CWE-522

How to fix

Patches

github.com/4ian/GDevelop/commit/fbb01f40a640c35c6064f827065eda00e5608690

Affected products

Product	Affected versions	Fixed in
GDevelop GDevelop	v ≤ 5.6.284	—

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