CVE-2021-42026

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-09 · updated 2026-06-17
Weakness: CWE-863

Description

A vulnerability has been identified in Mendix Applications using Mendix 8 (All versions < V8.18.13), Mendix Applications using Mendix 9 (All versions < V9.6.2). Applications built with affected versions of Mendix Studio Pro do not properly control read access for certain client actions. This could allow authenticated attackers to retrieve the changedDate attribute of arbitrary objects, even when they don't have read access to them.

Affected products

Siemens Mendix Applications using Mendix 7: from 8.0.0 before 8.18.13; from 9.0.0 before 9.6.2 — fixed in 8.18.13, 9.6.2

How to fix

Upgrade to a fixed version: Siemens Mendix Applications using Mendix 7 8.18.13, 9.6.2. Check the vendor advisory for mitigations.

References

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