High 8.9Published Jul 3, 2026

CVE-2026-47896Apache Lucene.Net: Unauthenticated arbitrary file read on the Lucene.Net.Replicator replication server

Updated under an hour ago (Oct 26, 2026, 10:50 AM ET)

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It affects Apache Software Foundation Apache Lucene.Net and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Apache Software Foundation Apache Lucene.Net

Exploited in the last 30 days

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 through 4.8.0-beta00017. Users are recommended to upgrade to version 4.8.0-beta00018, which fixes the issue.

CVSS: 8.9 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/AU:Y/RE:L
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Analyzed
Record last updated: Jul 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache Lucene.Net apache_software_foundation:apache_lucene.net (from the name)	from 4.8.0-beta00005 before 4.8.0-beta00018	CNA record
apache lucene.net apache:lucene.net	4.8.0; 4.8.0; 4.8.0; 4.8.0; 4.8.0; 4.8.0; 4.8.0; 4.8.0; and 5 more ranges	NVD

References

https://lists.apache.org/thread/7y9gbt17p55fh1zltks4pnh719wq9sqtvendor-advisory, mailing-list
http://www.openwall.com/lists/oss-security/2026/07/03/1mailing-list, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.