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 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).
- Affected
- Apache Solr
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 GitHub
- 7.5 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H - CVSS v2.0 NVD
- 4.6 MEDIUM
AV:N/AC:H/Au:S/C:P/I:P/A:P - EPSS
- 98.57% chance of exploitation in the next 30 days, 100th percentile
- CISA KEV
- added 2021-11-03
- Nuclei
- high · CWE-74
- Published
- 2019-12-30
- Updated
- 2025-10-21
Proof-of-concept exploits (5)
- http://packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Co…
- Ma1Dong/Solr_CVE-2019-175582★ · 2020-08-04
- thelostworldFree/CVE-2019-17558_Solr_Vul_Tool1★ · 2020-01-10
- xkyrage/Exploit_CVE-2019-17558-RCE0★ · 2020-12-15
- rogerzeferino/cve-2019-17558-apache-solr-rce1★ · 2026-08-10
Nuclei templates (1)
Metasploit modules (1)
ExploitDB entries (2)
Vulhub environments (1)
Exploit collections (1)
- CVE-2019-17558.yamlzan8in/afrog
Security advisories
- https://issues.apache.org/jira/browse/SOLR-13971
- https://www.oracle.com/security-alerts/cpuoct2020.html
- advisories/GHSA-ww97-9w65-2crx
- https://lists.apache.org/thread.html/r339865b276614661770c909be1dd7e862232e3ef0af98bfd856…
- https://lists.apache.org/thread.html/r36e35fd76239a381643555966fb3e72139e018d52d76544fb42…