CVE-2026-47879: Spring Cloud Gateway JsonToGrpcGatewayFilterFactory allows arbitrary Spring Resource locations for defining th

Routine

HIGH 7.7UPGRADE

CVE-2026-47879 is a high-severity flaw (CVSS 7.7) affecting spring cloud gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-08-27
Last modified	2026-09-10

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-09-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 06:17 UTCPublished CVE record published
2026-09-10 15:18 UTCUpdated Record last modified

vmware spring cloud gateway UPGRADE

Affected: < 3.1.14 · >= 4.0.0 and < 4.2.10 · >= 4.3.0 and < 4.3.6 · >= 5.0.0 and < 5.0.3

Fixed in: 3.1.14, 4.2.10, 4.3.6, 5.0.3

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy spring-cloud-gateway || rpm -q spring-cloud-gateway || spring-cloud-gateway --version

2. UPGRADE to 3.1.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spring-cloud-gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spring-cloud-gateway

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)

apt-cache madison spring-cloud-gateway sudo apt install spring-cloud-gateway=<VERSION_BEFORE_4.0.0> sudo apt-mark hold spring-cloud-gateway

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list spring-cloud-gateway sudo dnf downgrade spring-cloud-gateway-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add spring-cloud-gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Official advisories

Spring Security Advisories: cve-2026-47879 - HIGH - Spring Cloud Gateway SSRF and native file access with gRPC 2026-08-20

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-47879?

spring cloud gateway: upgrade to 3.1.14, 4.2.10, 4.3.6, 5.0.3. Exact commands for each OS are on this page.

Is CVE-2026-47879 being exploited?

CVE-2026-47879 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-47879 affect?

CVE-2026-47879 affects spring cloud gateway. Severity is high (CVSS 7.7). 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 Sprin

How urgent is CVE-2026-47879?

Priority 33/100. High severity

Software pages

VMware vulnerabilities

Related CVEs

CVE-2026-22750 HIGH 7.5 DOWNGRADE When configuring SSL bundles in Spring Cloud Gateway by using the configuration property spring.ssl.bundle, th
CVE-2026-47825 HIGH 8.6 UPGRADE Spring Cloud Gateway Server forwards the X-Forwarded-For and Forwarded headers from untrusted proxies in certa

References

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