CVE-2026-47898

Critical

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.

SeverityCritical

CVSS9.8

Exploit probability—

Product

Apache Lucene.net

PublishedJul 3, 2026

First seenJul 3, 2026

Weakness typeCWE-611XML external entity (XXE)

How to fix

Vendor advisories

lists.apache.org/thread/7yn9k6sbbsk18yco5y2hszpcf8dst489

Affected products

Product	Affected versions	Fixed in
apache lucene.net	4.8.0	—

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