What is CVE-2022-34466?

CVE-2022-34466 is a medium-severity vulnerability in Mendix, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.5/10. Published 2022-07-12.

How severe is CVE-2022-34466?

Medium severity. CVSS v3 base score is 6.5 out of 10.

RCE in Mendix

CVE-2022-34466

A vulnerability has been identified in Mendix Applications using Mendix 9 (All versions >= V9.11 < V9.15), Mendix Applications using Mendix 9 (V9.12) (All versions < V9.12.3). An expression injection vulnerability was discovered in the Workflow subsystem of Mendix Runtime, that can affect the running applications. The vulnerability could allow a malicious user to leak sensitive information in a certain configuration.

Published 2022-07-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Mendix
Siemens Mendix Applications Using 9 — versions All versions >= V9.11 < V9.15
Siemens Mendix Applications Using 9 (V9.12) — versions All versions < V9.12.3

Weakness classification (CWE)

References

cert-portal.siemens.com/productcert/pdf/ssa-492173.pdf (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-34466?: CVE-2022-34466 is a medium-severity vulnerability in Mendix, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.5/10. Published 2022-07-12.
How severe is CVE-2022-34466?: Medium severity. CVSS v3 base score is 6.5 out of 10.