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Vulnerability record · CVE-2018-8026 · published 5 July 2018

CVE-2018-8026: Apache solr xml external entity (xxe) vulnerability

Apache · Solr

This vulnerability in Apache Solr 6.0.0 to 6.6.4 and 7.0.0 to 7.3.1 relates to an XML external entity expansion (XXE) in Solr config files (currency.xml, enumsConfig.xml referred from schema.xml, TIKA parsecontext config file). In addition, Xinclude functionality provided in these config files is also affected in a similar way. The vulnerability can be used as XXE using file/ftp/http protocols in order to read arbitrary local files from the Solr server or the internal network. The manipulated files can be uploaded as configsets using Solr's API, allowing to exploit that vulnerability.

5.5 CVSS 3.0 Medium EPSS 9.0% · top 4.9% CWE-611 · XML external entity (XXE)
5.5CVSS 3.0 base score, v2 2.1
9.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

This vulnerability in Apache Solr 6.0.0 to 6.6.4 and 7.0.0 to 7.3.1 relates to an XML external entity expansion (XXE) in Solr config files (currency.xml, enumsConfig.xml referred from schema.xml, TIKA parsecontext config file). In addition, Xinclude functionality provided in these config files is also affected in a similar way. The vulnerability can be used as XXE using file/ftp/http protocols in order to read arbitrary local files from the Solr server or the internal network. The manipulated files can be uploaded as configsets using Solr's API, allowing to exploit that vulnerability.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/104690 Third Party AdvisoryVDB Entry
https://issues.apache.org/jira/browse/SOLR-12450 ExploitIssue TrackingVendor Advisory
https://mail-archives.apache.org/mod_mbox/lucene-solr-user/201807.mbox/%3C0cdc01d413b7%24f97ba580%24ec72f080%24%40apache Mailing ListVendor Advisory
https://security.netapp.com/advisory/ntap-20190307-0002/ Third Party Advisory
http://www.securityfocus.com/bid/104690 Third Party AdvisoryVDB Entry
https://issues.apache.org/jira/browse/SOLR-12450 ExploitIssue TrackingVendor Advisory
https://mail-archives.apache.org/mod_mbox/lucene-solr-user/201807.mbox/%3C0cdc01d413b7%24f97ba580%24ec72f080%24%40apache Mailing ListVendor Advisory
https://security.netapp.com/advisory/ntap-20190307-0002/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-8026), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.