CVE-2026-16999
Received Received - Intake

XML External Entity Injection in UYAP Document Editor

Vulnerability report for CVE-2026-16999, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-12

Last updated on: 2026-08-12

Assigner: Computer Emergency Response Team of the Republic of Turkey

Description

Improper restriction of XML external entity reference vulnerability in Ministry of Justice UYAP Document Editor allows Serialized Data External Linking. This issue affects UYAP Document Editor: from 4.5.17 before 5.4.17.

CVSS Scores

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Meta Information

Published
2026-08-12
Last Modified
2026-08-12
Generated
2026-08-12
AI Q&A
2026-08-12
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ministry_of_justice uyap_document_editor From 4.5.17 (inc) to 5.4.17 (exc)

Helpful Resources

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.

Attack-Flow Graph

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Executive Summary

This is an XML External Entity (XXE) vulnerability in the Ministry of Justice UYAP Document Editor. It allows attackers to reference external entities in XML data, potentially leading to unauthorized access to sensitive files or data leaks.

Impact Analysis

An attacker could exploit this to read sensitive files on the system, perform denial-of-service attacks, or access internal network resources if the application processes malicious XML input.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's confidentiality requirements. Organizations may face fines or legal consequences if exploited.

Mitigation Strategies

Update UYAP Document Editor to version 5.4.17 or later to address the XML external entity reference vulnerability.

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