CVE-2023-4554 - CVE House
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Status published Medium CVE-2023-4554

XML External Entity (XXE) Processing

Vulnerability Description

Improper Restriction of XML External Entity Reference vulnerability in OpenText AppBuilder on Windows, Linux allows Server Side Request Forgery, Probe System Files. AppBuilder's XML processor is vulnerable to XML External Entity Processing (XXE), allowing an authenticated user to upload specially crafted XML files to induce server-side request forgery, disclose files local to the server that processes them. This issue affects AppBuilder: from 21.2 before 23.2.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • George Mathias

References

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Affected Vendor

Affected Software

AppBuilder
Vulnerable Versions:
23.2, 21.2

Timeline

Official Publish: January 29th, 2024
Last Modified: May 29th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

CWE-611

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1005 Data from Local System
Collection
T1040 Network Sniffing
Collection
T1105 Ingress Tool Transfer
Command and Control
T1499 Endpoint Denial of Service
Impact