$ cve CVE-2019-17558 JSON

CVE-2019-17558 KEV EXPLOIT

7.5

HIGH · CVSS 3.1 · EPSS 98.6% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2022-05-03.

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).

Scoring

CVSS	7.5 (HIGH, v3.1)
Vector	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS	98.57% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-74
On CISA KEV	yes — remediate by 2022-05-03
Public exploit	yes
Published	2019-12-30
Last modified	2026-06-17

CISA KEV

Name	Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability
Added	2021-11-03
Due	2022-05-03
Vendor / product	Apache / Solr
Ransomware use	none reported

Affected (2)

Vendor	Product
apache	solr
oracle	primavera unifier

Public exploits

Source	Title	Date
exploit-db	Apache Solr - Remote Code Execution via Velocity Template (Metasploit)	2020-04-16
exploit-db	Apache Solr 8.2.0 - Remote Code Execution	2019-11-01

References

→ the Explorer · watch your stack · NVD