CVE-2026-47898: Apache Lucene.net

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Lucene.net: version 4.8.0 only

Published 2026-07-03. Last modified 2026-07-08.