CVE-2023-23835Network attack vector

Unauthenticated data retrieval via XPath constraint bypass

Published Feb 14, 2023 · Updated Mar 20, 2025

Improper access control in Siemens Mendix Runtime allows remote attackers to retrieve data via error-triggering XPath queries. Affected runtime APIs process crafted XPath queries that trigger errors while bypassing application XPath constraints. No authentication or user interaction is required, but Siemens has not identified the affected APIs or explained how error handling defeats constraint enforcement.

CVSS severity5.9
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Siemens Mendix Runtime allows remote attackers to retrieve data via error-triggering XPath queries. Affected runtime APIs process crafted XPath queries that trigger errors while bypassing application XPath constraints. No authentication or user interaction is required, but Siemens has not identified the affected APIs or explained how error handling defeats constraint enforcement.

The record

CVE
CVE-2023-23835
Published
Feb 14, 2023
Updated
Mar 20, 2025
Vendor
Siemens
Product
Mendix Runtime
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2025Record 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 < V7.23.34
  2. Affected versionversion=All versions < V8.18.23
  3. Affected versionversion=All versions < V9.12.10
  4. Affected versionversion=All versions < V9.18.4
  5. Affected versionversion=All versions < V9.22.0
  6. Affected versionversion=All versions < V9.6.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · Mendix Runtimeversion=All versions < V7.23.34; version=All versions < V8.18.23; version=All versions < V9.12.10; version=All versions < V9.18.4; version=All versions < V9.22.0; version=All versions < V9.6.15

Published CVSS scores

5.9Siemens AGCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

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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