---
title: "CVE-2026-101156: Unknown Product - Stored XSS"
description: "An unspecified product contains a stored XSS caused by improper sanitization of configuration input, letting authenticated high-privilege administrators execute scripts in other authenticated users' browsers, exploit requires high-privilege admin access."
url: https://panop.io/threat-heartbeat/CVE-2026-101156/
---

# CVE-2026-101156 Unknown Product - Stored XSS

An unspecified product contains a stored XSS caused by improper sanitization of configuration input, letting authenticated high-privilege administrators execute scripts in other authenticated users' browsers, exploit requires high-privilege admin access.

CVSS base score 8.4 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.29% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-101156)

## Details

Type

Stored XSS

Impact

Client Script Exec, Information Disclosure, Data Tampering, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Published

6 October 2026

Updated

15 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to the latest version with XSS fixes or apply appropriate input sanitization.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-101156](https://nvd.nist.gov/vuln/detail/CVE-2026-101156)
- [https://www.arista.com/en/support/advisories-notices/security-advisory/24808-security-advisory-0192](https://www.arista.com/en/support/advisories-notices/security-advisory/24808-security-advisory-0192)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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