# CVE-2026-23821: Inconsistent input filtering allows Authenticated Command Injection in AOS-10 CLI

> Authenticated attackers can execute arbitrary system commands on ArubaOS 10 Access Points due to inconsistent input filtering.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 May 2026
- **Updated:** 13 May 2026
- **Also known as:** GHSA-38g8-3hc5-9xvj

## What is CVE-2026-23821?

CVE-2026-23821 is a high-severity command injection vulnerability in Arubanetworks Arubaos, published on 12 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability in the configuration processing logic of Access Points running AOS-10 could allow an authenticated remote attacker to execute system commands under certain pre-existing conditions. Successful exploitation could allow an attacker to execute arbitrary commands on the underlying operating system.

Note: Access Points running AOS-8 Instant software are not affected by this vulnerability.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-23821?

It affects 1 product.


Products: Arubanetworks Arubaos.

## How do I fix CVE-2026-23821?

No fix has been published for CVE-2026-23821 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-23821 being exploited?

There is no known exploitation of CVE-2026-23821 in the wild and no public exploit code.

## Other vulnerabilities in Arubanetworks Arubaos

- [CVE-2024-42393](https://insights.sbomify.com/CVE-2024-42393/): Memory corruption in Hpe Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 (critical 9.8)
- [CVE-2024-42394](https://insights.sbomify.com/CVE-2024-42394/): Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 (critical 9.8)
- [CVE-2024-42395](https://insights.sbomify.com/CVE-2024-42395/): Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 (critical 9.8)
- [CVE-2024-31466](https://insights.sbomify.com/CVE-2024-31466/): Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol (critical 9.8)
- [CVE-2024-31467](https://insights.sbomify.com/CVE-2024-31467/): Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-23821 and fix it if it is affected.

What it is: CVE-2026-23821 is a high-severity command injection vulnerability in Arubanetworks Arubaos, published on 12 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-23821 in the wild and no public exploit code.

Affected product: Arubanetworks Arubaos. 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-2026-23821/ (Markdown: https://insights.sbomify.com/CVE-2026-23821/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-23821
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-23821
- OSV: https://osv.dev/vulnerability/CVE-2026-23821

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-23821/
Summaries are generated and may contain mistakes; the official description above is the record.