---
id: "CVE-2019-0193"
kind: "vulnerability"
aliases: ["CVE-2019-0193"]
title: "Apache Solr: Apache Solr DataImportHandler Code Injection Vulnerability"
severity: "critical"
cvss: 9.0
epss: 0.83547
exploited: true
status: "open"
category: "package"
products: [{"name": "Apache Solr", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["apache-solr", "exploited", "java", "package", "self-hosted"]
not_affected_if: ["default-config"]
published_at: "2019-08-01T14:15:13+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0193", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2019-0193", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-0193", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Apache Solr: Apache Solr DataImportHandler Code Injection Vulnerability

Apache Solr's optional DataImportHandler module contains a code injection flaw. Per the sources, an attacker can get code executed on the Solr server; the sources do not say whether authentication is needed.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Apache Solr affected ? fixed ?

## Fix

Apply the vendor update per Apache Solr's advisory (CISA says 'apply updates per vendor instructions'; the fixed version is unknown from these sources).
If DataImportHandler is not used, disabling or removing it is a likely mitigation, but the sources do not confirm this.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0193
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2019-0193
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2019-0193

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_