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HIGH severity

CVE-2021-22044 — spring-cloud-openfeign-co…

HIGH

CVE-2021-22044 is a high-severity (CVSS 7.5) Information Exposure vulnerability in org.springframework.cloud:spring-cloud-openfeign-core. A fix is available for org.springframework.cloud:spring-cloud-openfeign-core — see the affected versions and patch details below.

Exposure of Resource to Wrong Sphere in Spring Cloud OpenFeign

Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs66th percentile — riskier than 66% of all scored CVEsHighest risk
0.00%0.53%1.07%1.60%0.3%1.1%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected
☕org.springframework.cloud:spring-cloud-openfeign-core☕org.springframework.cloud:spring-cloud-openfeign-core

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

In Spring Cloud OpenFeign 3.0.0 to 3.0.4, 2.2.0.RELEASE to 2.2.9.RELEASE, and older unsupported versions, applications using type-level @RequestMappingannotations over Feign client interfaces, can be involuntarily exposing endpoints corresponding to @RequestMapping-annotated interface methods.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.springframework.cloud:spring-cloud-openfeign-core≥ 3.0.0&&< 3.0.53.0.5org.springframework.cloud:spring-cloud-openfeign-core:3.0.5
☕Mavenorg.springframework.cloud:spring-cloud-openfeign-core≥ 2.2.0&&< 2.2.102.2.10org.springframework.cloud:spring-cloud-openfeign-core:2.2.10

Affected Products

1 product · 2 configurations
Application
spring cloud openfeignvmware
≥ 3.0.0 && ≤ 3.0.4
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-openfeign-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.springframework.cloud:spring-cloud-openfeign-core to 3.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-22044 is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

In Spring Cloud OpenFeign 3.0.0 to 3.0.4, 2.2.0.RELEASE to 2.2.9.RELEASE, and older unsupported versions, applications using type-level `@RequestMapping`annotations over Feign client interfaces, can be involuntarily exposing endpoints corresponding to `@RequestMapping`-annotated interface methods.
O3 Security · Impact-Aware SCA

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CVE-2021-22044: spring-cloud-openfeign — Fixed in 3.0.5