CVE-2026-47825

Spring Cloud Gateway Server Forwards Headers from Untrusted Proxies in certain situations

State: Published
Severity: 8.6 High
Published: Jun 15, 2026
Updated: Jun 23, 2026
Reserved: May 20, 2026

Description

Spring Cloud Gateway Server forwards the X-Forwarded-For and Forwarded headers from untrusted proxies in certain configuration scenarios. This affects both the WebMVC and WebFlux Gateway Servers.

Affected versions: Spring Cloud Gateway 3.1.x (fix 3.1.13). Spring Cloud Gateway 4.1.x (fix 4.1.13). Spring Cloud Gateway 4.2.x (fix 4.2.9). Spring Cloud Gateway 4.3.x (fix 4.3.5). Spring Cloud Gateway 5.0.x (fix 5.0.2).

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N	vmware

Weaknesses

CWE-346 Origin Validation Error

Affected Products

Product	Versions
Spring Cloud GatewaySpring	3.1.0 to before 3.1.13Affected 4.1.0 to before 4.1.13Affected 4.2.0 to before 4.2.9Affected 4.3.0 to before 4.3.4.1Affected 5.0.0 to before 5.0.1.1Affected

References

https://spring.io/security/cve-2026-47825

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