CVE-2026-60043

CRITICAL 9.3

XSS in backend

CVSS Score

9.3

EPSS Score

0.0%

EPSS Percentile

0th

An unauthenticated remote attacker can perform a XSS attack on a logged in backend user allowing for execution of multiple critical system actions. This could allow an attacker to shutdown the server or restore an uploaded backup. This can result in a loss of integrity and availability.

CWE	CWE-79
Vendor	mb connect line
Product	mbconnect24
Published	Nov 10, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

High

Availability

High

Affected Versions

MB connect line / mbCONNECT24

2.0.0 < 2.21.0

MB connect line / mymbCONNECT24

2.0.0 < 2.21.0

Helmholz / myREX24V2

2.0.0 < 2.21.0

Helmholz / myREX24V2.virtual

2.0.0 < 2.21.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

certvde.com: https://www.certvde.com/en/advisories/VDE-2026-079/ certvde.com: https://www.certvde.com/en/advisories/VDE-2026-141/

Credits

SySS GmbH