Improper access control in Spring Cloud Gateway - CVE-2026-47879
Published: August 28, 2026
Vulnerability identifier: #VU146233
CSH Severity: Low
CVSS v4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-47879
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to access native files and perform server-side request forgery.
The vulnerability exists due to improper access control in JsonToGrpcGatewayFilterFactory when processing proto descriptor resource locations. A remote privileged user can specify an arbitrary Spring Resource location to access native files and perform server-side request forgery.
Affected software
Spring Cloud Gateway
How to mitigate CVE-2026-47879
Install security update from vendor's website.
Spring Cloud Gateway - addressed in versions 3.1.14, 4.2.10, 4.3.6, 5.0.3