# CVE-2026-101156: Security Advisory 0192

> An authenticated administrator can inject malicious scripts into configurations, allowing them to access sensitive data or modify settings in other users' browsers.

- **Severity:** Medium 6.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Oct 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-5f8p-q6pp-92x2

## What is CVE-2026-101156?

CVE-2026-101156 is a medium-severity cross-site scripting vulnerability in Arista Networks CloudVision CUE, published on 6 Oct 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A stored cross-site scripting (XSS) vulnerability may allow an authenticated, high-privilege administrator to store malicious content in a configuration. The content may execute in another authenticated user's browser when that user views or compares the affected configuration. Successful exploitation may allow the attacker to act through the victim's authenticated browser session to access sensitive data, modify configurations, or disrupt managed wireless services.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-101156?


## How do I fix CVE-2026-101156?

No fix has been published for CVE-2026-101156 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-101156 being exploited?

There is no known exploitation of CVE-2026-101156 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-101156 and fix it if it is affected.

What it is: CVE-2026-101156 is a medium-severity cross-site scripting vulnerability in Arista Networks CloudVision CUE, published on 6 Oct 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-101156 in the wild and no public exploit code.

Affected product: Arista Networks CloudVision CUE. 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-2026-101156/ (Markdown: https://insights.sbomify.com/CVE-2026-101156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-101156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-101156
- OSV: https://osv.dev/vulnerability/CVE-2026-101156

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-101156/
Summaries are generated and may contain mistakes; the official description above is the record.