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Servers and applications

CVE-2019-17558

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…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021.

Severity
High 7.5
Published
30 Dec 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
7.7.3, 8.4.0
Exploit chance
99% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Apache SolrServers and applications · cpe:a:apache:solr
  • From 5.0.0 before 7.7.3
  • From 8.0.0 before 8.4.0

Known exploited

CISA name
Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
3 May 2022
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-17558
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-17558