---
title: "CVE-2026-103905: JTL-Shop - Broken Access Control"
description: "JTL-Shop administration backend contains a broken access control vulnerability caused by processing the plugin safe mode toggle before authentication, letting unauthenticated remote attackers toggle plugin safe mode causing denial of service, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-103905/
---

# CVE-2026-103905 JTL-Shop - Broken Access Control

JTL-Shop administration backend contains a broken access control vulnerability caused by processing the plugin safe mode toggle before authentication, letting unauthenticated remote attackers toggle plugin safe mode causing denial of service, exploit requires no authentication.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-103905)

## Details

Type

Broken Access Control

Impact

Denial Of Service

CVSS vector

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

Published

14 October 2026

Updated

15 October 2026

Weakness

[CWE-306](https://cwe.mitre.org/data/definitions/306.html)

## Vendor fix

Update to the latest version with proper authentication checks before processing plugin safe mode toggle.

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-2026-103905](https://nvd.nist.gov/vuln/detail/CVE-2026-103905)
- [https://www.jtl-software.com/de/security/shop-maintenance-mode](https://www.jtl-software.com/de/security/shop-maintenance-mode)

[← 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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