# CVE-2021-26991: Security feature bypass in Cloud Manager

> An insecure CORS policy in Cloud Manager allows remote attackers to bypass security controls and interact with the service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9g82-8987-224m

## What is CVE-2021-26991?

CVE-2021-26991 is a high-severity vulnerability in Cloud Manager, published on 19 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager.

## Which versions are affected by CVE-2021-26991?

It affects 1 product.


Products: Netapp Cloud Manager.

## How do I fix CVE-2021-26991?

No fix has been published for CVE-2021-26991 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-26991 being exploited?

There is no known exploitation of CVE-2021-26991 in the wild and no public exploit code.

## Other vulnerabilities in Cloud Manager

- [CVE-2021-26990](https://insights.sbomify.com/CVE-2021-26990/): Missing authorization in Cloud Manager (critical 9.1)
- [CVE-2021-27002](https://insights.sbomify.com/CVE-2021-27002/): Information disclosure in Cloud Manager (high 7.5)
- [CVE-2021-26992](https://insights.sbomify.com/CVE-2021-26992/): Denial of service in Cloud Manager (high 7.5)
- [CVE-2021-42550](https://insights.sbomify.com/CVE-2021-42550/): RCE from attacker with configuration edit priviledges through JNDI lookup (medium 6.6)
- [CVE-2021-26998](https://insights.sbomify.com/CVE-2021-26998/): Information disclosure in NetApp Cloud Manager (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-26991 and fix it if it is affected.

What it is: CVE-2021-26991 is a high-severity vulnerability in Cloud Manager, published on 19 Mar 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-2021-26991 in the wild and no public exploit code.

Affected product: Cloud Manager. 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-2021-26991/ (Markdown: https://insights.sbomify.com/CVE-2021-26991/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-26991
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-26991
- OSV: https://osv.dev/vulnerability/CVE-2021-26991

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-26991/
Summaries are generated and may contain mistakes; the official description above is the record.