---
title: "CVE-2026-101157: Unknown Product - Stored XSS"
description: "An unspecified product contains a stored XSS vulnerability caused by improper sanitization of user input, letting unauthenticated attackers with adjacent-network access inject malicious content that executes when authenticated users view it."
url: https://panop.io/threat-heartbeat/CVE-2026-101157/
---

# CVE-2026-101157 Unknown Product - Stored XSS

An unspecified product contains a stored XSS vulnerability caused by improper sanitization of user input, letting unauthenticated attackers with adjacent-network access inject malicious content that executes when authenticated users view it.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-101157)

## Details

Type

Stored XSS

Impact

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

CVSS vector

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

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.

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-2026-101157](https://nvd.nist.gov/vuln/detail/CVE-2026-101157)
- [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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