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CVE-2026-112303— GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLs

Quick assessment

Affected
GDevelop GDevelop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GDevelop 桌面应用程序（5.6.284 及以下版本）存在凭证泄露漏洞。攻击者可通过在项目文件中注入由其控制的资源 URL，窃取 Cookie。攻击者可诱使受害者打开恶意构造的项目文件，触发 函数将 Cookie 发送至攻击者控制的服务器，从而泄露私有的云端项目资源。

CVSS 4.3 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
GDevelop GDevelop ≤ 5.6.284 affected
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I. Basic Information for CVE-2026-112303

Vulnerability Information
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Vulnerability Title
GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLs
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GDevelop GDevelop 0 ~ 5.6.284 -

II. Public POCs for CVE-2026-112303

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III. Intelligence Information for CVE-2026-112303

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Patches & Fixes for CVE-2026-112303 (1)

Vendor Advisories for CVE-2026-112303 (1)

Vendor Pages for CVE-2026-112303 (2)

Other References for CVE-2026-112303 (1)

IV. Related Vulnerabilities

Same weakness: CWE-522

V. Comments for CVE-2026-112303

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