Arbitrary Resource Location Exposure in Spring Cloud Gateway
CVE-2026-47879

7.7HIGH

Key Information:

Vendor

Spring

Status
Spring Cloud Gateway
Vendor
CVE Published:
27 August 2026

What is CVE-2026-47879?

The Spring Cloud Gateway JsonToGrpcGatewayFilterFactory allows for arbitrary Spring Resource locations to define the proto descriptor. This exposure could potentially enable attackers to load malicious or unauthorized resources, leading to application compromise. Developers and system administrators utilizing affected versions should promptly apply necessary updates to mitigate risks associated with this vulnerability.

Affected Version(s)

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

References

https://spring.io/security/cve-2026-47879

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.