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Request injection in Spring Cloud GatewayGHSA-2r2v-q399-qq93

MEDIUM

GHSA-2r2v-q399-qq93 is a medium-severity (CVSS 6.5) CWE-863 vulnerability in org.springframework.cloud:spring-cloud-gateway. A fix is available for org.springframework.cloud:spring-cloud-gateway — see the affected versions and patch details below.

Also known asCVE-2021-22051
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Oct 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs51th percentile — riskier than 51% of all scored CVEsHighest risk
0.00%0.40%0.79%1.19%0.1%0.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-2r2v-q399-qq93 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected
☕org.springframework.cloud:spring-cloud-gateway☕org.springframework.cloud:spring-cloud-gateway

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream services. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.5+, 2.2.x users should upgrade to 2.2.10.RELEASE or newer.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.springframework.cloud:spring-cloud-gateway≥ 3.0.0&&< 3.0.53.0.5org.springframework.cloud:spring-cloud-gateway:3.0.5
☕Mavenorg.springframework.cloud:spring-cloud-gateway≥ 2.2.0&&< 2.2.10.RELEASE0.52.2.10.RELEASE0.5org.springframework.cloud:spring-cloud-gateway:2.2.10.RELEASE0.5

Affected Products

1 product · 2 configurations
Application
spring cloud gatewayvmware
≥ 3.0.0 && < 3.0.5
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework.cloud:spring-cloud-gateway, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.springframework.cloud:spring-cloud-gateway to 3.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2r2v-q399-qq93 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream services. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.5+, 2.2.x users should upgrade to 2.2.10.RELEASE or newer.
O3 Security · Impact-Aware SCA

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Request injection in Spring Cloud Gateway (Medium 6.5)