# CVE-2026-73781: Authenticated Stored Cross-Site Scripting Vulnerability (XSS) in AOS-CX Web-Based Management Interface

> Authenticated attackers can inject malicious scripts into the AOS-CX web interface, executing code in administrators' browsers to potentially hijack sessions.

- **Severity:** High 8.4 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Sep 2026
- **Updated:** 3 Sep 2026
- **Also known as:** GHSA-99fv-8233-hr67

## What is CVE-2026-73781?

CVE-2026-73781 is a high-severity cross-site scripting vulnerability in Hpe Arubaos-Cx, published on 1 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A vulnerability in the web-based management interface of AOS-CX could allow an authenticated remote attacker to conduct a stored cross-site scripting (XSS) attack against an administrative user of the interface. A successful exploit allows an attacker to execute arbitrary script code in a victim's browser in the context of the affected interface.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-73781?

It affects 1 product.


Products: Hpe Arubaos-Cx.

## How do I fix CVE-2026-73781?

No fix has been published for CVE-2026-73781 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73781 being exploited?

There is no known exploitation of CVE-2026-73781 in the wild and no public exploit code.

## Other vulnerabilities in Hpe Arubaos-Cx

- [CVE-2026-73749](https://insights.sbomify.com/CVE-2026-73749/): Unauthenticated Buffer Overflow Vulnerabilities lead to Remote Code Execution in AOS-CX (critical 9.8)
- [CVE-2026-23813](https://insights.sbomify.com/CVE-2026-23813/): Authentication Bypass in Web Interface allows Unauthenticated Admin Password Reset (critical 9.8)
- [CVE-2026-73750](https://insights.sbomify.com/CVE-2026-73750/): Authenticated Buffer Overflow Vulnerabilities in AOS-CX API Endpoint Leads to Possible Code Execution (high 8.8)
- [CVE-2026-73751](https://insights.sbomify.com/CVE-2026-73751/): Authenticated Remote Command Injection in AOS-CX Web-based Management Interface (high 8.8)
- [CVE-2026-73752](https://insights.sbomify.com/CVE-2026-73752/): Unauthenticated Arbitrary File Write Vulnerability Leads to Remote Code Execution in AOS-CX (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73781 and fix it if it is affected.

What it is: CVE-2026-73781 is a high-severity cross-site scripting vulnerability in Hpe Arubaos-Cx, published on 1 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-73781 in the wild and no public exploit code.

Affected product: Hpe Arubaos-Cx. 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-2026-73781/ (Markdown: https://insights.sbomify.com/CVE-2026-73781/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73781
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73781
- OSV: https://osv.dev/vulnerability/CVE-2026-73781

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73781/
Summaries are generated and may contain mistakes; the official description above is the record.