CVE-2026-47898 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apache	Lucene.Net	4.8.0

Related Weaknesses (CWE)

CWE-611

References

https://lists.apache.org/thread/7yn9k6sbbsk18yco5y2hszpcf8dst489Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/03/3Mailing ListThird Party Advisory

FAQ

What is CVE-2026-47898?

CVE-2026-47898 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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-beta000...

How severe is CVE-2026-47898?

CVE-2026-47898 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-47898?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Lucene.Net.