What’s Vulnerable › Vulnerabilities
CVE-2026-23822: Unauthenticated XML External Entity Injection in AOS-8 Instant allows Denial of Service
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-12 · updated 2026-10-26
- Weakness: CWE-776
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
Affected products
- Hewlett Packard Enterprise (HPE) ArubaOS (AOS): from 6.4.0.0 through 6.5.4.24; from 8.4.0.0 before 8.10.0.22; from 8.11.0.0 before 8.12.0.7; from 8.13.0.0 before 8.13.1.2 — fixed in 8.10.0.22, 8.12.0.7, 8.13.1.2
How to fix
Upgrade to a fixed version: Hewlett Packard Enterprise (HPE) ArubaOS (AOS) 8.10.0.22, 8.12.0.7, 8.13.1.2. Check the vendor advisory for mitigations.
References
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