CVE-2026-47879 Spring Cloud Gateway SSRF and native file access with gRPC

High 7.7 Published 27 Aug 2026 Updated 27 Aug 2026

Attackers can exploit arbitrary Spring Resource locations in gRPC filters to perform Server-Side Request Forgery and access native files.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-47879?

CVE-2026-47879 is a high-severity server-side request forgery vulnerability in Spring Cloud Gateway, published on 27 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Spring Cloud Gateway JsonToGrpcGatewayFilterFactory allows arbitrary Spring Resource locations for defining the proto descriptor. Spring Cloud Gateway 5.0.0 - 5.0.2 Spring Cloud Gateway 4.3.0 - 4.3.5 Spring Cloud Gateway 4.0.0 - 4.2.9 Spring Cloud Gateway 3.1.13 and earlier

Weakness: CWE-918

Which versions are affected by CVE-2026-47879?

It affects 1 product.

Products include Vmware Spring Cloud Gateway.

How do I fix CVE-2026-47879?

No fix has been published for CVE-2026-47879 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-47879 being exploited?

There is no known exploitation of CVE-2026-47879 in the wild and no public exploit code.

Sources

Also known as GHSA-7mwm-q6x4-5h32.