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

High 8.4 Published 1 Sep 2026 Updated 3 Sep 2026

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

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: None listed

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

Which versions are affected by CVE-2026-73781?

It affects 1 product.

Products include 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.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-73781 being exploited?

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

All Hpe Arubaos-Cx vulnerabilities

Sources

Also known as GHSA-99fv-8233-hr67.