Quick answers
- Is CVE-2026-23822 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-23822 being exploited in the wild.
- How severe is CVE-2026-23822?
- Medium severity, with a CVSS score of 5.3, published 12 May 2026.
- Which products and versions are affected?
- HPE Aruba Networking AOS-8 Instant 8.x.x.x.
- Is there a fix for CVE-2026-23822?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-23822 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-23822?
- Check whether you run HPE Aruba Networking AOS-8 Instant at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is classified as an Improper Restriction of Recursive Entity References in DTDs (CWE-776), commonly known as an XML Entity Expansion or 'Billion Laughs' attack. It resides within the XML handling component of the DHCP services in AOS-8 Instant firmware. An unauthenticated remote attacker can exploit this by sending specially crafted XML data that, when processed, causes excessive CPU and memory consumption. The attack requires a high complexity (AC:H) and user interaction (UI:R) to succeed. Successful exploitation results in a Denial of Service (DoS) affecting the availability of the Access Point.
Affected products
- HPE Aruba Networking AOS-8 Instant 8.x.x.x
Timeline
- 2026-05-12: disclosed: Initial publication of the vulnerability advisory.