Vulnerability record · CVE-2026-47898 · published 3 July 2026

CVE-2026-47898: Apache lucene.net xml external entity (xxe) vulnerability

Apache · Lucene.Net

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.

4.0 CVSS 4.0 Medium EPSS 0.47% · top 61.9% CWE-611 · XML external entity (XXE)

4.0CVSS 4.0 base score

0.47%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

8 Jul 2026Last modified by NVD

Description

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Lucene.Net Apache

References

Link	Tags
https://lists.apache.org/thread/7yn9k6sbbsk18yco5y2hszpcf8dst489	Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/03/3	Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-47898), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.