Auth bypass in Mendix
CVE-2021-42026
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (44.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000
Affected products
- Mendix
- Siemens Mendix Applications Using 8 — versions All versions < V8.18.13
- Siemens Mendix Applications Using 9 — versions All versions < V9.6.2
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-779699.pdf (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-42026?
- CVE-2021-42026 is a medium-severity vulnerability in Mendix, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2021-11-09.
- How severe is CVE-2021-42026?
- Medium severity. CVSS v3 base score is 4.3 out of 10.