Is CVE-2019-17558 in the CISA KEV catalog?

Yes. CVE-2019-17558 is on the CISA Known Exploited Vulnerabilities list, added 2021-11-03.

What is the CVSS severity of CVE-2019-17558?

CVE-2019-17558 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-17558?

CVE-2019-17558 has an EPSS score of 98.57% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-17558?

Upgrade solr to 8.4.0 or later.

CVE & CISA-KEV Catalog

CVE-2019-17558

HIGHCISA KEVEPSS 100th pctl

7.5

CVSS v3

NVD

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).

CWE-74Injection

How to fix

Remediation Available

solrNVD

Affected:>= 8.0.0, < 8.4.0Fixed in:8.4.0CVE-2019-17558derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

98.57%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability

The Apache Solr VelocityResponseWriter plug-in contains an unspecified vulnerability which can allow for remote code execution.

Apply updates per vendor instructions.

Remediation due: 2022-05-03

References

Patch1

issues.apache.org

Exploit3

Third-Party Advisory1

oracle.com

Government Resource1

cisa.gov

Issue Tracking2

Mailing List22

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2021-44832	Medium	6.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-27.