# CVE-2026-23808: Client Isolation Bypass via GTK Manipulation

> Remote attackers can bypass client isolation and inject frames by installing a malicious Group Temporal Key, compromising network segmentation and confidentiality.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Mar 2026
- **Updated:** 1 Apr 2026
- **Also known as:** GHSA-3xgp-5q28-4f22

## What is CVE-2026-23808?

CVE-2026-23808 is a medium-severity vulnerability in Arubanetworks Arubaos, published on 4 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability has been identified in a standardized wireless roaming protocol that could enable a malicious actor to install an attacker-controlled Group Temporal Key (GTK) on a client device. Successful exploitation of this vulnerability could allow a remote malicious actor to perform unauthorized frame injection, bypass client isolation, interfere with cross-client traffic, and compromise network segmentation, integrity, and confidentiality.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-23808?

It affects 1 product.


Products: Arubanetworks Arubaos.

## How do I fix CVE-2026-23808?

No fix has been published for CVE-2026-23808 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-23808 being exploited?

There is no known exploitation of CVE-2026-23808 in the wild and no public exploit code.

## Other vulnerabilities in Arubanetworks Arubaos

- [CVE-2024-42393](https://insights.sbomify.com/CVE-2024-42393/): Memory corruption in Hpe Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 (critical 9.8)
- [CVE-2024-42394](https://insights.sbomify.com/CVE-2024-42394/): Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 (critical 9.8)
- [CVE-2024-42395](https://insights.sbomify.com/CVE-2024-42395/): Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10 (critical 9.8)
- [CVE-2024-31466](https://insights.sbomify.com/CVE-2024-31466/): Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol (critical 9.8)
- [CVE-2024-31467](https://insights.sbomify.com/CVE-2024-31467/): Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-23808 and fix it if it is affected.

What it is: CVE-2026-23808 is a medium-severity vulnerability in Arubanetworks Arubaos, published on 4 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-23808 in the wild and no public exploit code.

Affected product: Arubanetworks Arubaos. 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-2026-23808/ (Markdown: https://insights.sbomify.com/CVE-2026-23808/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-23808
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-23808
- OSV: https://osv.dev/vulnerability/CVE-2026-23808

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-23808/
Summaries are generated and may contain mistakes; the official description above is the record.