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Fencer Intel
medium 5.5

CVE-2018-8010 json

There is a XML external entity expansion (XXE) vulnerability in Apache Solr config files

published 2018-05-21 8 y ago modified 2026-06-17 4 mo ago also GHSA-rc9v-h28f-jcmf , EUVD-2018-0681

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

This vulnerability in Apache Solr 6.0.0 to 6.6.3, 7.0.0 to 7.3.0 relates to an XML external entity expansion (XXE) in Solr config files (solrconfig.xml, schema.xml, managed-schema). 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. Users are advised to upgrade to either Solr 6.6.4 or Solr 7.3.1 releases both of which address the vulnerability. Once upgrade is complete, no other steps are required. Those releases only allow external entities and Xincludes that refer to local files / zookeeper resources below the Solr instance directory (using Solr's ResourceLoader); usage of absolute URLs is denied. Keep in mind, that external entities and XInclude are explicitly supported to better structure config files in large installations. Before Solr 6 this was no problem, as config files were not accessible through the APIs.

Patch / fix

  • maven org.apache.solr:solr-core 6.6.4, 7.3.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-8010 updated cvss 6.5

solr: XML external entity expansion in config files allows attackers to read arbitrary files

  • Red Hat JBoss Developer Studio 11 solr-core solr-core Red Hat JBoss Data Grid 6 solr-core solr-core Red Hat JBoss Fuse Service Works 6 solr-core solr-core
    affected: no fix planned “Will not fix”
  • Red Hat Fuse 7 camel Red Hat JBoss Data Virtualization 6 solr-core solr-core Red Hat JBoss Enterprise Application Platform 6 solr-core solr-core Red Hat JBoss Fuse 6 camel Red Hat JBoss Fuse Integration Service 2 solr solr
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.71% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N
GitHub 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.solr:solr-core
>=6.6.0, <6.6.4
>=7.0.0, <7.3.1
6.6.4
7.3.1

Affected products

  • Apache Software Foundation Apache Solr

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.