CVE-2026-79866 Unauthenticated Adjacent Path Traversal Vulnerability leads to Filesystem Compromise in AOS-8
Critical 9.6
Published
Updated
Check this codebase for CVE-2026-79866 and fix it if it is affected.
What it is: CVE-2026-79866 is a critical vulnerability in Hewlett Packard Enterprise (HPE) ArubaOS (AOS), published on 22 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-79866 in the wild and no public exploit code.
Affected product: Hewlett Packard Enterprise (HPE) ArubaOS (AOS). 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-2026-79866/ (Markdown: https://insights.sbomify.com/CVE-2026-79866/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-79866?
CVE-2026-79866 is a critical vulnerability in Hewlett Packard Enterprise (HPE) ArubaOS (AOS), published on 22 Oct 2026.
Official description
An unauthenticated path traversal vulnerability exists in the PAPI protocol in AOS-8. Successful exploitation of this vulnerability could allow an unauthenticated adjacent attacker to read, modify, and delete files on the underlying operating system.
Which versions are affected by CVE-2026-79866?
How do I fix CVE-2026-79866?
No fix has been published for CVE-2026-79866 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-79866 being exploited?
There is no known exploitation of CVE-2026-79866 in the wild and no public exploit code.
Sources
Also known as GHSA-mrc3-qq5w-rw79.