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CISA Known Exploited Vulnerability

This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.

CVE

CVE-2019-17558

7.5

CVSShigh

Exploitable remotely over the internet · low-privilege account sufficient.

Description

Apache Solr 5.0.0 to Apache Solr 8.3.1 are vulnerable to a Remote Code Execution through the VelocityResponseWriter. A Velocity template can be provided through Velocity templates in a configset `velocity/` directory or as a parameter. A user defined configset could contain renderable, potentially malicious, templates. Parameter provided templates are disabled by default, but can be enabled by setting `params.resource.loader.enabled` by defining a response writer with that setting set to `true`. Defining a response writer requires configuration API access. Solr 8.4 removed the params resource loader entirely, and only enables the configset-provided template rendering when the configset is `trusted` (has been uploaded by an authenticated user).

Attack Vector

Network

Privileges Req.

Low

User Interaction

None

apache solr

Updated Sep 22, 2026View on NVD →

S4E scanner

highProduct Based Web Vulnerabilities~15 seconds

CVE-2019-17558 Scanner

CVE-2019-17558 scanner - Remote Code Execution (RCE) vulnerability in Apache Solr

Used 2.1k times · 5.9k assets checked · domain, ipv4, subdomain

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