# CVE-2026-73137: Information disclosure in Red Hat Advanced Cluster Management for Kubernetes 2.11

> A tenant with HelmRelease create permissions can exfiltrate sensitive credentials from arbitrary namespaces by manipulating the secretRef.Namespace field.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Aug 2026
- **Updated:** 5 Sep 2026
- **Also known as:** GHSA-rf6j-x765-j4p2

## What is CVE-2026-73137?

CVE-2026-73137 is a high-severity vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.11, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A flaw was found in the multicloud-operators-subscription component of Red Hat Advanced Cluster Management (RHACM). A tenant with HelmRelease create permissions can exploit this vulnerability by manipulating the `secretRef.Namespace` field. This allows the `GetSecret()` function in the HelmRelease controller to fetch sensitive credentials from any namespace, which are then sent to an attacker-controlled Helm repository. This can lead to the exfiltration of credentials from arbitrary namespace Secrets, resulting in information disclosure.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-73137?


## How do I fix CVE-2026-73137?

No fix has been published for CVE-2026-73137 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73137 being exploited?

There is no known exploitation of CVE-2026-73137 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73137 and fix it if it is affected.

What it is: CVE-2026-73137 is a high-severity vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.11, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-73137 in the wild and no public exploit code.

Affected product: Red Hat Advanced Cluster Management for Kubernetes 2.11. 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-2026-73137/ (Markdown: https://insights.sbomify.com/CVE-2026-73137/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73137
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73137
- OSV: https://osv.dev/vulnerability/CVE-2026-73137

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-73137/
Summaries are generated and may contain mistakes; the official description above is the record.