CVE-2026-47897highCWE-22

CVE-2026-47897: high-severity vulnerability in Apache Lucene.Net

Apache Lucene.Net: Arbitrary file write from malicious server to Lucene.Net.Replicator client

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.9epss 0.7%
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache Lucene.Net (Lucene.Net.Replicator library). This issue affects Apache Lucene.Net.Replicator: 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.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/AU:Y/RE:L
Affected products
Apache Software Foundation · Apache Lucene.Net
Related CVEs — Apache Lucene.Net

In the same product, most dangerous first.

CVE-2026-47896HIGHApache Lucene.Net: Unauthenticated arbitrary file read on the Lucene.Net.Replicator replication serverEPSS 0.8%CVE-2026-47898MEDIUMApache Lucene.Net: XXE vulnerability in Lucene.Net.Analysis.Common PatternParserEPSS 0.5%