# CVE-2021-22044: Exposure of Resource to Wrong Sphere in Spring Cloud OpenFeign

> Attackers can access unintended endpoints when Feign clients use type-level RequestMapping annotations, potentially exposing sensitive data.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Oct 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-pf94-6v2v-cm3j

## What is CVE-2021-22044?

CVE-2021-22044 is a high-severity vulnerability in Spring Cloud OpenFeign, published on 28 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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 `@RequestMapping`annotations over Feign client interfaces, can be involuntarily exposing endpoints corresponding to `@RequestMapping`-annotated interface methods.

Weakness: CWE-668 (Exposure of Resource to Wrong Sphere), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-22044?

4 open source packages ship an affected version, including org.springframework.cloud:spring-cloud-openfeign-core. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.springframework.cloud:spring-cloud-openfeign-core` | Maven | From 2.2.0 | 2.2.10 |
| `org.springframework.cloud:spring-cloud-openfeign-core` | Maven | From 2.2.0 | 2.2.10 |
| `org.springframework.cloud:spring-cloud-openfeign-core` | Maven | From 3.0.0 | 3.0.5 |
| `org.springframework.cloud:spring-cloud-openfeign-core` | Maven | From 3.0.0 | 3.0.5 |

Products: Vmware Spring Cloud Openfeign.

## How do I fix CVE-2021-22044?

Upgrade org.springframework.cloud:spring-cloud-openfeign-core to a fixed version for your release line: 2.2.10 or 3.0.5.

## Is CVE-2021-22044 being exploited?

There is no known exploitation of CVE-2021-22044 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22044 and fix it if it is affected.

What it is: CVE-2021-22044 is a high-severity vulnerability in Spring Cloud OpenFeign, published on 28 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22044 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.springframework.cloud:spring-cloud-openfeign-core (Maven): affected from 2.2.0; fixed in 2.2.10
- org.springframework.cloud:spring-cloud-openfeign-core (Maven): affected from 2.2.0; fixed in 2.2.10
- org.springframework.cloud:spring-cloud-openfeign-core (Maven): affected from 3.0.0; fixed in 3.0.5
- org.springframework.cloud:spring-cloud-openfeign-core (Maven): affected from 3.0.0; fixed in 3.0.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-22044/ (Markdown: https://insights.sbomify.com/CVE-2021-22044/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22044
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22044
- OSV: https://osv.dev/vulnerability/CVE-2021-22044

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22044/
Summaries are generated and may contain mistakes; the official description above is the record.