CVE-2026-112303
GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLs
GDevelop GDevelop
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- GDevelopaffected: all versions through 5.6.284CVE List
References 5
- github.com/4ian/GDevelop/commit/fbb01f40a640c35c6064f827065eda00e5608690Fixvia CVE List
- vulncheck.com/advisories/gdevelop-through-5.6.284-cookie-leak-via-localfiledownloader-resource-urlsAdvisoryvia CVE List
- github.com/4ian/GDevelop/issues/9257Referencevia CVE List
- github.com/4ian/GDevelop/blob/v5.6.284/newIDE/electron-app/app/LocalFileDownloader.jsReferencevia CVE List
- github.com/4ian/GDevelop/blob/v5.6.284/newIDE/app/src/ProjectsStorage/LocalFileStorageProvider/LocalFileResourceMover.jsReferencevia CVE List