CVE-2026-112303

GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLs

CVSS score

5.3

EPSS probability

—

Risk score

0.5

Published

5 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-112303: GDevelop Desktop App Credential Leak

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

The 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 (S0).

Why does it matter?

Attackers can trick victims into opening a crafted project, enabling cookie theft and exposing private cloud project resources (S0).

What should be done?

Follow vendor advisories for updates (S0).

Chain of evidence and sources2 verified claims

GDevelop masaüstü uygulaması 5.6.284 sürümüne kadar gd_resource çerezinin sızdırılmasına neden olan bir zafiyet içermektedir.

S0 · daybreach-canonical S1 · nvd

İncelenen resmî kaynaklarda yama durumu doğrulanamamıştır.

S0 · daybreach-canonical

Show the technical text from the sources

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.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CWE: CWE-522

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-112303 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	GDevelop	GDevelop	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
5.3	CVSS V40	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD
5.3	CVSS V4_0	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	CVE CNA
4.3	CVSS V31	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	NVD
4.3	CVSS V3_1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source

reference

Yama veya çözüm referansı

Open source

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-112303 is associated with the following CWEs:

CWE-522: Common Weakness Enumeration Entry CWE-522

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-112303 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

User—

Official Sources and Advisories

https://github.com/4ian/GDevelop/issues/9257vendor-advisory https://github.com/4ian/GDevelop/commit/fbb01f40a640c35c6064f827065eda00e5608690patch https://github.com/4ian/GDevelop/blob/v5.6.284/newIDE/electron-app/app/LocalFileDownloader.jsvendor-advisory https://github.com/4ian/GDevelop/blob/v5.6.284/newIDE/app/src/ProjectsStorage/LocalFileStorageProvider/LocalFileResourceMover.jsvendor-advisory VulnCheck Advisory: GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLsvendor-advisory

CVSS Vector Radar Chart

5.3 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionP

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)P

Availability (Erişilebilirlik)None

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

GDevelop

Weakness Type (CWE & CAPEC)

CWE-522

Get this vulnerability through the API

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