CVE-2021-31339Network attack vector

Authenticated information disclosure via XML exception

Published May 12, 2021 · Updated Aug 3, 2024

Information disclosure in Siemens Mendix Excel Importer before 9.0.3 allows remote authenticated users to expose server details via XML upload. The module parses a manipulated XML file, raises an exception, and returns error information describing the application server and XML framework. Access to the application's configured upload function is required, and the reported consequence is limited to disclosure of implementation details.

CVSS severity4.3
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Siemens Mendix Excel Importer before 9.0.3 allows remote authenticated users to expose server details via XML upload. The module parses a manipulated XML file, raises an exception, and returns error information describing the application server and XML framework. Access to the application's configured upload function is required, and the reported consequence is limited to disclosure of implementation details.

The record

CVE
CVE-2021-31339
Published
May 12, 2021
Updated
Aug 3, 2024
Vendor
Siemens
Product
Mendix Excel Importer
Classifications
CWE-209
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 12, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions < V9.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · Mendix Excel Importerversion=All versions < V9.0.3

Published CVSS scores

4.3CISACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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