CVE-2025-40834: XSS in Mendix RichText widget (v4.0.0-4.6.1)
CVE-2025-40834 Published on November 17, 2025
A vulnerability has been identified in Mendix RichText (All versions >= V4.0.0 < V4.6.1). Affected widget does not properly neutralize the input. This could allow an attacker to execute cross-site scripting attacks.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2025-40834 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2025-40834
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Affected Versions
Siemens Mendix RichText:- Version V4.0.0 and below V4.6.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.