There is a XML external entity expansion (XXE) vulnerability in Apache Solr config files
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.solr:solr-core | >= 6.6.0, < 6.6.4, >= 7.0.0, < 7.3.1 | 6.6.4, 7.3.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-8010
- https://github.com/apache/lucene-solr/commit/4ba409e0ff3dc38aad88f7b7ad69a76325272b8
- https://github.com/apache/lucene-solr/commit/6c4e45e28494d4d4d04fb89852d18c86fa3d5f8
- https://github.com/apache/lucene-solr/commit/6d082d5743dee7e08a86b3f2ef03bc025112512
- https://github.com/apache/lucene-solr/commit/96f079b4b47eaadff65c7aaf0e5bafe68e30ec3
- https://github.com/advisories/GHSA-rc9v-h28f-jcmf
- https://issues.apache.org/jira/browse/SOLR-12316
- https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5@%3Csolr-user.lucene.apache.org%3E
- https://mail-archives.apache.org/mod_mbox/www-announce/201805.mbox/%3C08a801d3f0f9%24df46d300%249dd47900%24%40apache.org%3E
- http://www.securityfocus.com/bid/104239
- CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-611- Platform
- Java / Kotlin (Maven)
- Package
org.apache.solr:solr-core- Disclosed
- 17.10.2018
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-rc9v-h28f-jcmf - CC BY 4.0
Vulnerability history: org.apache.solr:solr-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 31
- First → latest
- 10.2018 06.2026
- Without a fix
- 1
- Exploited in attacks
- 2
Severity breakdown
- Critical 4
- High 16
- Medium 10
- Low 1
Disclosures per year
- 2018: 5
- 2019: 3
- 2020: 2
- 2021: 1
- 2022: 11
- 2023: 0
- 2024: 4
- 2025: 2
- 2026: 3
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There is a XML external entity expansion (XXE) vulnerability in Apache Solr config files this entry
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