How severe is CVE-2026-47897?

CVE-2026-47897 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-47897 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-47897?

CVE-2026-47897 primarily affects Apache Lucene.net. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-47897?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-47897 published?

CVE-2026-47897 was published on 2026-07-03 and last updated on 2026-07-08.

CVE-2026-47897

CVE-2026-47897 is a high-severity vulnerability in Apache Lucene.net with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.9
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Apache Lucene.net
Published: 2026-07-03
Last modified: 2026-07-08

Description

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.

Frequently asked questions

What is CVE-2026-47897?: 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.
How severe is CVE-2026-47897?: CVE-2026-47897 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-47897 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-47897?: CVE-2026-47897 primarily affects Apache Lucene.net. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-47897?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-47897 published?: CVE-2026-47897 was published on 2026-07-03 and last updated on 2026-07-08.

References

Affected products (13)

cpe:2.3:a:apache:lucene.net:4.8.0:beta00005:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00006:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00007:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00008:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00009:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00010:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00011:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00012:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00013:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00014:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00015:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00016:*:*:*:*:*:*
cpe:2.3:a:apache:lucene.net:4.8.0:beta00017:*:*:*:*:*:*

More vulnerabilities in Apache Lucene.net

CVE-2026-47898 — Critical (CVSS 9.8): Improper Restriction of XML External Entity Reference vulnerability in Apache Lucene.Net (Lucene.Net.Analysis.Common…
CVE-2024-43383 — High (CVSS 8.0): Deserialization of Untrusted Data vulnerability in Apache Lucene.Net.Replicator. This issue affects Apache…
CVE-2026-47896 — High (CVSS 7.5): Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache Lucene.Net…

All CVEs affecting Apache Lucene.net →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-55393 — Critical (CVSS 10.0): Unvalidated pathnames in the web interface in Teledyne FLIR Aware2 versions through 6.9.0.2 (PackBot) and 1.7.9…
CVE-2026-97163 — Critical (CVSS 10.0): Joomla Extension - lomart.fr - Unauthenticated remote code installation in UP plugin extension 5.0.0-5.2.0, 6.0.0-6.0.29
CVE-2026-80155 — Critical (CVSS 10.0): Lantronix SLC8000 before firmware v9.7.0.5, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1,…
CVE-2026-70200 — Critical (CVSS 10.0): Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Logic Apps allows an…
CVE-2026-85706 — Critical (CVSS 10.0): GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.11.12, 19.0 before 19.0.9,…
CVE-2026-76606 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Path Traversal via image element in Fabrik < 4.7.2.

Browse all CWE-22 (Path Traversal) vulnerabilities →