CVE-2026-23822 Unauthenticated XML External Entity Injection in AOS-8 Instant allows Denial of Service

What is CVE-2026-23822?

CVE-2026-23822 is a medium-severity vulnerability in Arubanetworks Arubaos, published on 12 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability in the XML handling component of AOS-8 DHCP services could allow an unauthenticated remote attacker to trigger a denial-of-service condition. Successful exploitation could allow an attacker to cause excessive resource consumption upon user interaction, leading to service disruption or reduced availability of the affected system.

NOTE: This vulnerability only impacts Access Points running AOS Instant 8.x.x.x

Weakness: CWE-776

Which versions are affected by CVE-2026-23822?

It affects 1 product.

Products include Arubanetworks Arubaos.

How do I fix CVE-2026-23822?

No fix has been published for CVE-2026-23822 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-23822 being exploited?

There is no known exploitation of CVE-2026-23822 in the wild and no public exploit code.

Other vulnerabilities in Arubanetworks Arubaos

• CVE-2024-42393 Memory corruption in Hpe Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 Critical 9.8
• CVE-2024-42394 Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 Critical 9.8
• CVE-2024-42395 Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 Critical 9.8
• CVE-2024-31466 Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol Critical 9.8
• CVE-2024-31467 Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol Critical 9.8

All Arubanetworks Arubaos vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xrfm-m363-m483.