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

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Summary

CVECVE-2026-47825
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-15 21:17:13 UTC
Updated2026-06-16 15:23:55 UTC
DescriptionSpring 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).

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

EPSS: 0.001860000 probability, percentile 0.082590000 (date 2026-06-19)

Problem Types: CWE-346 | CWE-346 CWE-346: Origin Validation Error

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
3.1CNACVSS8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Spring Spring Cloud Gateway affected 3.1.0 3.1.13 custom Not specified
CNA Spring Spring Cloud Gateway affected 4.1.0 4.1.13 custom Not specified
CNA Spring Spring Cloud Gateway affected 4.2.0 4.2.9 custom Not specified
CNA Spring Spring Cloud Gateway affected 4.3.0 4.3.5 custom Not specified
CNA Spring Spring Cloud Gateway affected 5.0.0 5.0.2 custom Not specified

References

ReferenceSourceLinkTags
spring.io/security/cve-2026-47825 [email protected] spring.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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