CVE-2026-47898
Received Received - Intake

XML External Entity Injection in Apache Lucene.Net

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Apache Software Foundation

Description
Improper Restriction of XML External Entity Reference vulnerability in Apache Lucene.Net (Lucene.Net.Analysis.Common library). This issue affects Apache Lucene.Net.Analysis.Common: from 4.8.0-beta00005 before 4.8.0-beta00018. Users are recommended to upgrade to version 4.8.0-beta00018, which fixes the issue.

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Meta Information

Published
2026-07-03
Last Modified
2026-07-03
Generated
2026-07-03
AI Q&A
2026-07-03
EPSS Evaluated
N/A
NVD
CVE-2026-47898
EUVD
EUVD-2026-41517

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache lucene.net.analysis.common From 4.8.0-beta00005 (inc) to 4.8.0-beta00018 (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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Mitigation Strategies

Users are recommended to upgrade Apache Lucene.Net.Analysis.Common from versions 4.8.0-beta00005 up to but not including 4.8.0-beta00018 to version 4.8.0-beta00018, which fixes the issue.

Executive Summary

This vulnerability is an Improper Restriction of XML External Entity (XXE) Reference in the Apache Lucene.Net.Analysis.Common library. It affects versions from 4.8.0-beta00005 up to but not including 4.8.0-beta00018. The issue allows XML external entities to be improperly processed, which can lead to security risks.

Impact Analysis

The vulnerability can potentially allow an attacker to exploit XML external entity processing, which might lead to information disclosure or other security issues depending on how the library is used. Since the CVSS base score is 4.0 with local attack vector and high complexity, it suggests that exploitation requires local access and is not trivial.

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