Skip to content
VulniPulse
Sign in
Advisory severityMedium4.0Apache Software Foundation

Medium [CVE-2026-47898] Improper Restriction of XML External Entity Reference vulnerability in Apache Lucene.Net (Lucene.Net.Analysis.Common library)

This medium-severity Apache Software Foundation advisory covers CVE-2026-47898 affecting Apache Lucene.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-47898 Source published Source updated

VulniPulse record published Record updated

CVE-2026-47898
Affected products & platforms
Apache Software FoundationUnclassified
Open source advisory

Summary

Improper Restriction of XML External Entity Reference vulnerability in Apache Lucene. Net (Lucene.

Net.Analysis. Common library).

This issue affects Apache Lucene. 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.

Is CVE-2026-47898 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-47898 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-47898?

Upgrade to a fixed release named by Apache:

  • 4.8.0-beta00018

Confirm against the vendor advisory before you patch.

Affected versions
  • 4.8.0-beta00005 through 4.8.0-beta00018.

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Fixed versions
  • 4.8.0-beta00018

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Mitigation

Upgrade to a fixed release: 4.8.0-beta00018. That is the remediation for this advisory.

The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Get an email when Apache publishes the next one.

See Apache's last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).

Alert me about Apache

More Apache Software Foundation advisories

All Apache Software Foundation advisories

iPhone and Android apps · New on the App Store

Monitor future Apache Software Foundation CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.

Download on the App StoreGet CVE alerts on AndroidSee app features

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.

Sign in to join the discussion.