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High

XML External Entity (XXE) Injection in Apache Solr

  • Disclosed: 01.08.2019
  • Updated: 11.10.2026 12:22

CISA confirms exploitation of this vulnerability in real attacks. Prioritise checking whether your application is affected. CISA KEV · CC0 1.0

In Apache Solr, the DataImportHandler, an optional but popular module to pull in data from databases and other sources, has a feature in which the whole DIH configuration can come from a request's "dataConfig" parameter. The debug mode of the DIH admin screen uses this to allow convenient debugging / development of a DIH config. Since a DIH config can contain scripts, this parameter is a security risk. Starting with version 8.2.0 of Solr, use of this parameter requires setting the Java System property "enable.dih.dataConfigParam" to true.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.apache.solr:solr-core < 8.2.0 8.2.0

References

CVSS score 7.2/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:H
Weakness (CWE)
CWE-94
Platform
Java / Kotlin (Maven)
Package
org.apache.solr:solr-core
Disclosed
01.08.2019
Updated
11.10.2026 12:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-3gm7-v7vw-866c - 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.

All (31) in the archive
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

Severity:
  1. Apache Solr has hardcoded credentials in the Basic Authentication setup tool
    High · 8.1 CVE-2026-44825 >= 9.4.0, <= 9.10.1, = 10.0.0 no fix
  2. Apache Solr: Insufficient file-access checking in standalone core-creation requests
    High · 7.1 CVE-2026-22444 >= 8.6.0, < 9.10.1 9.10.1
  3. Apache Solr: Unauthorized bypass of certain "predefined permission" rules in the RuleBasedAuthorizationPlugin
    High · 8.2 CVE-2026-22022 >= 5.3.0, < 9.10.1 9.10.1
  4. Apache Solr vulnerable to Execution with Unnecessary Privileges
    High CVE-2025-24814 < 9.8.0 9.8.0
  5. Apache Solr: Backup/Restore APIs allow for deployment of executables in malicious ConfigSets
    High · 8.8 CVE-2023-50386 >= 6.0.0, < 8.11.3, >= 9.0.0, < 9.4.1 8.11.3, 9.4.1
  6. Apache Solr can leak certain passwords due to System Property redaction logic inconsistencies
    High · 7.5 CVE-2023-50291 >= 6.0.0, < 8.11.3, >= 9.0.0, < 9.3.0 8.11.3, 9.3.0
  7. Apache Solr vulnerable to XML Bomb
    High · 7.5 CVE-2019-12401 < 5.0.0 5.0.0
  8. Improper Restriction of XML External Entity Reference in Apache Solr
    High CVE-2012-6612 < 4.1.0 4.1.0
  9. Apache Solr insecure inter-node communication
    High · 7.5 CVE-2017-7660 >= 5.3.0, < 5.5.5, >= 6.0.0, < 6.6.0 5.5.5, 6.6.0
  10. Apache Solr Kerberos delegation token functionality flaws
    High · 7.5 CVE-2017-9803 >= 6.2.0, < 6.6.1 6.6.1
  11. Incorrect Authorization in Apache Solr
    Critical · 9.8 CVE-2020-13957 >= 6.6.0, < 8.6.3 8.6.3
  12. Improper permission handling in Apache Solr
    High · 7.5 CVE-2021-29262 < 8.8.2 8.8.2
  13. Improper Input Validation in Apache Solr
    High · 7.5 Exploited in attacks CVE-2019-17558 >= 5.0.0, < 8.4.0, >= 6.0.0, < 8.4.0, >= 7.0.0, < 8.4.0, >= 8.0.0, < 8.4.0 8.4.0
  14. Unrestricted upload of file with dangerous type in Apache Solr
    Critical · 9.8 CVE-2019-12409 >= 8.1.1, < 8.3.0 8.3.0
  15. XML External Entity (XXE) Injection in Apache Solr this entry
    High · 7.2 Exploited in attacks CVE-2019-0193 < 8.2.0 8.2.0
  16. Server-Side Request Forgery (SSRF) in org.apache.solr:solr-core
    High · 7.5 CVE-2017-3164 >= 1.3.0, < 7.7.0 7.7.0
  17. Critical severity vulnerability that affects org.apache.solr:solr-core
    Critical · 9.8 CVE-2019-0192 >= 5.0.0, < 7.0.0, >= 6.0.0, < 7.0.0 7.0.0
  18. Improper Limitation of a Pathname ('Path Traversal') in org.apache.solr:solr-core
    High · 7.5 CVE-2017-3163 < 5.5.4, >= 6.0.0, < 6.4.1 5.5.4, 6.4.1
  19. Remote code execution occurs in Apache Solr
    Critical · 9.8 CVE-2017-12629 >= 7.0.0, < 7.1.0, >= 6.0.0, < 6.6.2, >= 5.5.0, < 5.5.5 7.1.0, 6.6.2, 5.5.5
  20. There is a XML external entity expansion (XXE) vulnerability in Apache Solr
    High · 7.5 CVE-2018-1308 >= 1.2, < 6.6.3, >= 7.0.0, < 7.3.0 6.6.3, 7.3.0

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