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CVE-2026-47898

41
FAUCET Score

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.

First published: Jul 3, 2026Last modified: Jul 3, 2026

Impacted Technologies

VendorProductVersion(s)CPE
4.8.0CPE matchmatch criteria
cpe:2.3:a:apache:lucene.net:4.8.0:beta00005:*:*:*:*:*:*
4.8.0CPE matchmatch criteria
cpe:2.3:a:apache:lucene.net:4.8.0:beta00006:*:*:*:*:*:*
4.8.0CPE matchmatch criteria
cpe:2.3:a:apache:lucene.net:4.8.0:beta00007:*:*:*:*:*:*
4.8.0CPE matchmatch criteria
cpe:2.3:a:apache:lucene.net:4.8.0:beta00008:*:*:*:*:*:*
4.8.0CPE matchmatch criteria
cpe:2.3:a:apache:lucene.net:4.8.0:beta00009:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

4.0MEDIUM

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:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 5th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (1)

apacheapache:www.mail-archive.com/[email protected]/msg11347.html

CVE-2026-47898: Apache Lucene.Net: XXE vulnerability in Lucene.Net.Analysis.Common PatternParser

Jul 2, 2026

References

openwall.com / lists/oss-security/2026/07/03/3
Mailing ListThird Party Advisory
lists.apache.org / thread/7yn9k6sbbsk18yco5y2hszpcf8dst489
Mailing ListVendor Advisory