ReviewHigh

CVE-2026-47879

Spring Spring Cloud Gateway

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

CVSS: 7.7
EPSS: -
CISA KEV: Not listed
Published: 2026.08.27

PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.7

Vulnerability overview

Affected product and versions

Product: Spring Spring Cloud Gateway
Affected versions: >= 5.0.0 <= 5.0.2, >= 4.3.0 <= 4.3.5, >= 4.0.0 <= 4.2.9, <= 3.1.13
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Spring Spring Cloud Gateway and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
CWE: CWE-918