# CVE-2022-31028: Possible DDOS by establishing keep-alive connections with anonymous HTTP clients in MinIO

> Attackers can cause denial of service in MinIO by establishing keep-alive connections that lead to unending go-routine buildup.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Jun 2022
- **Updated:** 22 Apr 2025
- **Also known as:** GHSA-qrpr-r3pw-f636

## What is CVE-2022-31028?

CVE-2022-31028 is a high-severity denial of service vulnerability in minio, published on 3 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

MinIO is a multi-cloud object storage solution. Starting with version RELEASE.2019-09-25T18-25-51Z and ending with version RELEASE.2022-06-02T02-11-04Z, MinIO is vulnerable to an unending go-routine buildup while keeping connections established due to HTTP clients not closing the connections. Public-facing MinIO deployments are most affected. Users should upgrade to RELEASE.2022-06-02T02-11-04Z to receive a patch. One possible workaround is to use a reverse proxy to limit the number of connections being attempted in front of MinIO, and actively rejecting connections from such malicious clients.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2022-31028?

It affects 1 product.


Products: Minio Minio.

## How do I fix CVE-2022-31028?

No fix has been published for CVE-2022-31028 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-31028 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31028 exists.

## Other vulnerabilities in minio

- [CVE-2023-28434](https://insights.sbomify.com/CVE-2023-28434/): MinIO Security Feature Bypass (high 8.8, exploited in the wild)
- [CVE-2023-28432](https://insights.sbomify.com/CVE-2023-28432/): MinIO Information Disclosure (high 7.5, exploited in the wild)
- [CVE-2020-11012](https://insights.sbomify.com/CVE-2020-11012/): Authentication bypass MinIO Admin API (critical 9.3)
- [CVE-2026-33322](https://insights.sbomify.com/CVE-2026-33322/): MinIO: JWT Algorithm Confusion in OIDC Authentication (critical 9.2)
- [CVE-2026-33419](https://insights.sbomify.com/CVE-2026-33419/): MinIO: LDAP login brute-force via user enumeration and missing rate limit (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-31028 and fix it if it is affected.

What it is: CVE-2022-31028 is a high-severity denial of service vulnerability in minio, published on 3 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31028 exists.

Affected product: minio. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2022-31028/ (Markdown: https://insights.sbomify.com/CVE-2022-31028/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31028
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31028
- OSV: https://osv.dev/vulnerability/CVE-2022-31028

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-31028/
Summaries are generated and may contain mistakes; the official description above is the record.