CVE-2026-112303 PUBLISHED

GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLs

Assigner: VulnCheck
Reserved: 19.10.2026 Published: 19.10.2026 Updated: 19.10.2026

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
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	None
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	GDevelop
Product	GDevelop
Versions	Default: unaffected affected from 0 to 5.6.284 (incl.)

CVE-2026-112303 PUBLISHED

GDevelop through 5.6.284 Cookie Leak via LocalFileDownloader Resource URLs

Metrics

Product Status

Credits

References

Problem Types