# CVE-2026-102156: Security Advisory 0191

> An unauthenticated attacker can inject LDAP queries against the directory service in Arista CloudVision CUE, potentially exposing data or bypassing security controls.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Oct 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-5g2g-2r2v-8v65

## What is CVE-2026-102156?

CVE-2026-102156 is a medium-severity vulnerability in Arista Networks CloudVision CUE, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper neutralization of Lightweight Directory Access Protocol (LDAP) authentication input may allow an unauthenticated network attacker, under high-complexity conditions, to inject queries against the configured directory service.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-102156?


## How do I fix CVE-2026-102156?

No fix has been published for CVE-2026-102156 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102156 being exploited?

There is no known exploitation of CVE-2026-102156 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102156 and fix it if it is affected.

What it is: CVE-2026-102156 is a medium-severity vulnerability in Arista Networks CloudVision CUE, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-102156 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-2026-102156/ (Markdown: https://insights.sbomify.com/CVE-2026-102156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102156
- OSV: https://osv.dev/vulnerability/CVE-2026-102156

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102156/
Summaries are generated and may contain mistakes; the official description above is the record.