# CVE-2019-17558: Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability

> CVE-2019-17558: Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability. CVSS 7.5 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2019-17558
Last updated: 2025-10-21T23:35:54Z

- Published: 2019-12-30 16:36 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: apache
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 98.6%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown

## 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).

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- n/a: Apache Solr

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-17558)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2019-17558)
- [http://packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.html](http://packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.html)
- [https://issues.apache.org/jira/browse/SOLR-13971](https://issues.apache.org/jira/browse/SOLR-13971)
- [https://lists.apache.org/thread.html/r0b7b9d4113e6ec1ae1d3d0898c645f758511107ea44f0f3a1210c5d5%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r0b7b9d4113e6ec1ae1d3d0898c645f758511107ea44f0f3a1210c5d5%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r12ab2cb15a34e49b4fecb5b2bdd7e10f3e8b7bf1f4f47fcde34d3a7c%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r12ab2cb15a34e49b4fecb5b2bdd7e10f3e8b7bf1f4f47fcde34d3a7c%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r19d23e8640236a3058b4d6c23e5cd663fde182255f5a9d63e0606a66%40%3Cdev.lucene.apache.org%3E](https://lists.apache.org/thread.html/r19d23e8640236a3058b4d6c23e5cd663fde182255f5a9d63e0606a66%2540%3Cdev.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache.org%3E](https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%2540%3Ccommits.druid.apache.org%3E)
- [https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%40%3Csolr-user.lucene.apache.org%3E](https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%2540%3Csolr-user.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r25f1bd4545617f5b86dde27b4c30fec73117af65598a30e20209739a%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r25f1bd4545617f5b86dde27b4c30fec73117af65598a30e20209739a%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r339865b276614661770c909be1dd7e862232e3ef0af98bfd85686b51%40%3Cdev.lucene.apache.org%3E](https://lists.apache.org/thread.html/r339865b276614661770c909be1dd7e862232e3ef0af98bfd85686b51%2540%3Cdev.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r36e35fd76239a381643555966fb3e72139e018d52d76544fb42f96d8%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r36e35fd76239a381643555966fb3e72139e018d52d76544fb42f96d8%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r5074d814d3a8c75df4b20e66bfd268ee0a73ddea7e85070cec3ae78d%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r5074d814d3a8c75df4b20e66bfd268ee0a73ddea7e85070cec3ae78d%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r58c58fe51c87bc30ee13bb8b4c83587f023edb349018705208e65b37%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r58c58fe51c87bc30ee13bb8b4c83587f023edb349018705208e65b37%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r5dc200f7337093285bac40e6d5de5ea66597c3da343a0f7553f1bb12%40%3Csolr-user.lucene.apache.org%3E](https://lists.apache.org/thread.html/r5dc200f7337093285bac40e6d5de5ea66597c3da343a0f7553f1bb12%2540%3Csolr-user.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r79c7e75f90e735fd32c4e3e97340625aab66c09dfe8c4dc0ab768b69%40%3Csolr-user.lucene.apache.org%3E](https://lists.apache.org/thread.html/r79c7e75f90e735fd32c4e3e97340625aab66c09dfe8c4dc0ab768b69%2540%3Csolr-user.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r7b89b3dcfc1b6c52dd8d610b897ac98408245040c92b484fe97a51a2%40%3Csolr-user.lucene.apache.org%3E](https://lists.apache.org/thread.html/r7b89b3dcfc1b6c52dd8d610b897ac98408245040c92b484fe97a51a2%2540%3Csolr-user.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r7f21ab40a9b17b1a703db84ac56773fcabacd4cc1eb5c4700d17c071%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r7f21ab40a9b17b1a703db84ac56773fcabacd4cc1eb5c4700d17c071%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r8a36e4f92f4449dec517e560e1b55639f31b3aca26c37bbad45e31de%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r8a36e4f92f4449dec517e560e1b55639f31b3aca26c37bbad45e31de%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r8e7a3c253a695a7667da0b0ec57f9bb0e31f039e62afbc00a1d96f7b%40%3Csolr-user.lucene.apache.org%3E](https://lists.apache.org/thread.html/r8e7a3c253a695a7667da0b0ec57f9bb0e31f039e62afbc00a1d96f7b%2540%3Csolr-user.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r9271d030452170ba6160c022757e1b5af8a4c9ccf9e04164dec02e7f%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r9271d030452170ba6160c022757e1b5af8a4c9ccf9e04164dec02e7f%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/r99c3f7ec3a079e2abbd540ecdb55a0e2a0f349ca7084273a12e87aeb%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/r99c3f7ec3a079e2abbd540ecdb55a0e2a0f349ca7084273a12e87aeb%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/ra29fa6ede5184385bf2c63e8ec054990a7d4622bba1d244bee70d82d%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/ra29fa6ede5184385bf2c63e8ec054990a7d4622bba1d244bee70d82d%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/rafc939fdd753f55707841cd5886fc7fcad4d8d8ba0c72429b3220a9a%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/rafc939fdd753f55707841cd5886fc7fcad4d8d8ba0c72429b3220a9a%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/rb964fe5c4e3fc05f75e8f74bf6b885f456b7a7750c36e9a8045c627a%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/rb964fe5c4e3fc05f75e8f74bf6b885f456b7a7750c36e9a8045c627a%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%40%3Ccommits.submarine.apache.org%3E](https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%2540%3Ccommits.submarine.apache.org%3E)
- [https://lists.apache.org/thread.html/rde3dbd8e646dabf8bef1b097e9a13ee0ecbdb8441aaed6092726c98d%40%3Cissues.ambari.apache.org%3E](https://lists.apache.org/thread.html/rde3dbd8e646dabf8bef1b097e9a13ee0ecbdb8441aaed6092726c98d%2540%3Cissues.ambari.apache.org%3E)
- [https://lists.apache.org/thread.html/re8d12db916b5582a23ed144b9c5abd0bea0be1649231aa880f6cbfff%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/re8d12db916b5582a23ed144b9c5abd0bea0be1649231aa880f6cbfff%2540%3Cissues.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/rf5230a049d989dbfdd404b4320a265dceeeba459a4d04ec21873bd55%40%3Csolr-user.lucene.apache.org%3E](https://lists.apache.org/thread.html/rf5230a049d989dbfdd404b4320a265dceeeba459a4d04ec21873bd55%2540%3Csolr-user.lucene.apache.org%3E)
- [https://lists.apache.org/thread.html/rf6d7ffae2b940114324e036b6394beadf27696d051ae0c4a5edf07af%40%3Cissues.lucene.apache.org%3E](https://lists.apache.org/thread.html/rf6d7ffae2b940114324e036b6394beadf27696d051ae0c4a5edf07af%2540%3Cissues.lucene.apache.org%3E)
- [https://www.oracle.com/security-alerts/cpuoct2020.html](https://www.oracle.com/security-alerts/cpuoct2020.html)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2019-17558 · Markdown: https://rewindex.com/cve/CVE-2019-17558.md · JSON: https://rewindex.com/api/v1/cves/CVE-2019-17558 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:17.760Z