Paper/Archive/CVE-2026-47898

CVE-2026-47898

Apache Software Foundation Apache Lucene.Net — Apache Lucene.Net: XXE vulnerability in Lucene.Net.Analysis.Common PatternParser

EPSS 0.5%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 40.5.405 × 208.1 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Apache Lucene.Net4.8.0-beta00005 – < 4.8.0-beta000184.8.0-beta00018CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

apache (CNA)4.0CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

advisorylists.apache.org/thread/7yn9k6sbbsk18yco5y2hszpcf8dst489 refopenwall.com/lists/oss-security/2026/07/03/3