CVE-2026-47879

Spring Cloud Gateway SSRF and native file access with gRPC

HIGH

8.7

CVSS Score

Published: August 27, 2026 at 05:20 AM UTC

Updated: September 10, 2026 at 04:18 PM UTC

2 products affected across 2 vendorsSpring Cloud GatewaySpring Cloud Gateway

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Severity

HIGH8.7

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring Cloud Gateway · VMware

95%

v < 3.1.144.0.0 ≤ v < 4.2.104.3.0 ≤ v < 4.3.65.0.0 ≤ v < 5.0.3

Affected range stops below 3.1.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.2.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.3.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.3, so it looks safe — our inference, not a vendor statement

Spring Cloud Gateway · Spring

60%

v ≤ 3.1.134.0.0 ≤ v ≤ 4.2.94.3.0 ≤ v ≤ 4.3.55.0.0 ≤ v ≤ 5.0.24.0.0 4.3.0 5.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

Vendor Advisory

Source: [email protected]

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: CHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-918

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