# CVE-2026-59654: Apache CloudStack: DoS caused by database connections leak

> Attackers can cause denial of service in Apache CloudStack management server by exploiting a database connection leak in scoped global configuration.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Aug 2026
- **Updated:** 24 Aug 2026
- **Also known as:** GHSA-9j4g-grw7-5966

## What is CVE-2026-59654?

CVE-2026-59654 is a medium-severity denial of service vulnerability in Apache Cloudstack, published on 21 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Missing Release of Resource after Effective Lifetime vulnerability in Apache CloudStack's scoped global configuration functionality. It affects different modules and plugins of the CloudStack management server, including Quota, Host-HA, etc., and may lead to eventual denial of service (DoS) scenario for the management server.

This issue affects Apache CloudStack: from 4.7.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

Weakness: CWE-772 (Missing Release of Resource after Effective Lifetime)

## Which versions are affected by CVE-2026-59654?

It affects 1 product.


Products: Apache Cloudstack.

## How do I fix CVE-2026-59654?

No fix has been published for CVE-2026-59654 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-59654 being exploited?

There is no known exploitation of CVE-2026-59654 in the wild and no public exploit code.

## Other vulnerabilities in Apache Cloudstack

- [CVE-2012-4501](https://insights.sbomify.com/CVE-2012-4501/): Missing authorization in n/a (critical 10.0)
- [CVE-2024-38346](https://insights.sbomify.com/CVE-2024-38346/): Apache CloudStack: Unauthenticated cluster service port leads to remote execution (critical 9.8)
- [CVE-2024-39864](https://insights.sbomify.com/CVE-2024-39864/): Apache CloudStack: Integration API service uses dynamic port when disabled (critical 9.8)
- [CVE-2024-29006](https://insights.sbomify.com/CVE-2024-29006/): Apache CloudStack: x-forwarded-for HTTP header parsed by default (critical 9.8)
- [CVE-2022-35741](https://insights.sbomify.com/CVE-2022-35741/): Apache CloudStack SAML Single Sign-On XXE (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59654 and fix it if it is affected.

What it is: CVE-2026-59654 is a medium-severity denial of service vulnerability in Apache Cloudstack, published on 21 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-59654 in the wild and no public exploit code.

Affected product: Apache Cloudstack. 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-2026-59654/ (Markdown: https://insights.sbomify.com/CVE-2026-59654/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59654
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59654
- OSV: https://osv.dev/vulnerability/CVE-2026-59654

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59654/
Summaries are generated and may contain mistakes; the official description above is the record.