CVE-2026-112181
Received Received - Intake

XML External Entity Injection in OpenKM Community Edition

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description
Vulnerability due to inadequate restriction of references to external XML entities in OpenKM Community Edition. The XML processing in FormUtils / LocalEntityResolver does not properly restrict the resolution of external resources. An authenticated remote attacker with the ROLE_USER role can exploit the flaw via a REST request. In the 6.3.x branch, this allows the attacker to trigger HTTP requests under their control (SSRF); in 7.0.3, it allows the attacker to read local files and access internal HTTP resources from the server.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-112181
EUVD
EUVD-2026-125270

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
OpenKM OpenKM Community Edition From 6.3.3 (inc) to 6.3.13 (inc)
OpenKM OpenKM Community Edition 7.0.3

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-611 The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

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Executive Summary

This vulnerability is due to inadequate restriction of references to external XML entities in OpenKM Community Edition. The XML processing in FormUtils/LocalEntityResolver does not properly restrict resolution of external resources. An authenticated remote attacker with ROLE_USER can exploit it via a REST request to trigger HTTP requests under their control (SSRF in 6.3.x) or read local files and access internal HTTP resources (in 7.0.3).

The flaw exists in versions 6.3.3 through 6.3.13 and 7.0.3. It is classified under CWE-611 and has a CVSS v4.0 base score of 8.3.

Detection Guidance

Detect this vulnerability by checking OpenKM Community Edition versions 6.3.3 through 6.3.13 and 7.0.3. Verify if REST endpoints related to workflows or XML processing are accessible to non-administrative users. Inspect server logs for unusual HTTP requests or file access patterns from authenticated users with ROLE_USER.

Impact Analysis

An attacker could exploit this to perform Server-Side Request Forgery (SSRF) in OpenKM 6.3.x, allowing them to make unauthorized HTTP requests from the server. In OpenKM 7.0.3, they could read local files or access internal HTTP resources on the server.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR (data protection) and HIPAA (health information privacy) by exposing internal resources or local files. Compliance risks include data breaches and unauthorized disclosure of personal or health information.

Mitigation Strategies

Upgrade to OpenKM CE 7.0.4 or apply version 6.3.14 once available. As a temporary fix, block non-administrator access to workflow-related endpoints or disable unused web services. Restrict ROLE_USER privileges to prevent unauthorized REST requests.

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