---
title: "CVE-2026-103904: JTL-Shop - Stored XSS"
description: "JTL-Shop contains a stored XSS vulnerability caused by lack of validation and output encoding of arbitrary consent names in the public consent endpoint, letting unauthenticated remote attackers execute script code in administrator sessions, exploit requires administrator to view consent statistics page."
url: https://panop.io/threat-heartbeat/CVE-2026-103904/
---

# CVE-2026-103904 JTL-Shop - Stored XSS

JTL-Shop contains a stored XSS vulnerability caused by lack of validation and output encoding of arbitrary consent names in the public consent endpoint, letting unauthenticated remote attackers execute script code in administrator sessions, exploit requires administrator to view consent statistics page.

CVSS base score 9.3 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-103904)

## Details

Type

Stored XSS

Impact

Stored XSS

CVSS vector

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

Published

14 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 proper input validation and output encoding for consent names.

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-2026-103904](https://nvd.nist.gov/vuln/detail/CVE-2026-103904)
- [https://www.jtl-software.com/de/security/sicherheitsluecke-shop-xss/](https://www.jtl-software.com/de/security/sicherheitsluecke-shop-xss/)

[← All CVEs](https://panop.io/threat-heartbeat/)

## 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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