--- title: "CVE-2019-17558: Apache Solr vulnerability | CubePath" 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…" language: en source: https://cubepath.com/security/cve/CVE-2019-17558 --- # CVE-2019-17558: Apache Solr vulnerability | CubePath ## 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). Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-17558) ## Key data ### CVSS 3.1 High 7.5 Score published by CISA-ADP in the CVE record. CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | High | The attack depends on conditions outside the attacker's control, so it takes preparation. | | Privileges required | Low | A basic user account is needed. | | User interaction | None | No action from any user is needed. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.98567 (98.6% probability) Percentile 99.9% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability Added to the catalog Nov 3, 2021 Federal due date May 3, 2022 ### CISA assessment as of Feb 6, 2025 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-74](https://cwe.mitre.org/data/definitions/74.html) Improper Neutralization of Special Elements in Output Used by a Downstream Component ## Affected products Products listed in the CVE record, as the CNA published them. - Apache Solr - affected: Apache Solr 5.0.0 to Apache Solr 8.3.1 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [\[lucene-issues\] 20200107 \[jira\] \[Commented\] (SOLR-13971) CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/rb964fe5c4e3fc05f75e8f74bf6b885f456b7a7750c36e9a8045c627a%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200108 \[jira\] \[Commented\] (SOLR-13971) CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r9271d030452170ba6160c022757e1b5af8a4c9ccf9e04164dec02e7f%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200108 \[jira\] \[Updated\] (SOLR-14025) CVE-2019-17558: Velocity response writer RCE vulnerability persists after 8.3.1](https://lists.apache.org/thread.html/ra29fa6ede5184385bf2c63e8ec054990a7d4622bba1d244bee70d82d%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200108 \[GitHub\] \[lucene-solr\] Sachpat opened a new pull request #1156: SOLR-13971](https://lists.apache.org/thread.html/r36e35fd76239a381643555966fb3e72139e018d52d76544fb42f96d8%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200108 \[GitHub\] \[lucene-solr\] Sachpat commented on a change in pull request #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r5074d814d3a8c75df4b20e66bfd268ee0a73ddea7e85070cec3ae78d%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200108 \[GitHub\] \[lucene-solr\] artem-smotrakov commented on a change in pull request #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/rf6d7ffae2b940114324e036b6394beadf27696d051ae0c4a5edf07af%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200108 \[GitHub\] \[lucene-solr\] Sachpat commented on issue #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r58c58fe51c87bc30ee13bb8b4c83587f023edb349018705208e65b37%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200113 \[GitHub\] \[lucene-solr\] Sachpat closed pull request #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r25f1bd4545617f5b86dde27b4c30fec73117af65598a30e20209739a%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200113 \[jira\] \[Commented\] (SOLR-14025) CVE-2019-17558: Velocity response writer RCE vulnerability persists after 8.3.1](https://lists.apache.org/thread.html/r12ab2cb15a34e49b4fecb5b2bdd7e10f3e8b7bf1f4f47fcde34d3a7c%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200113 \[GitHub\] \[lucene-solr\] chatman commented on issue #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r99c3f7ec3a079e2abbd540ecdb55a0e2a0f349ca7084273a12e87aeb%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200113 \[GitHub\] \[lucene-solr\] Sachpat commented on issue #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r0b7b9d4113e6ec1ae1d3d0898c645f758511107ea44f0f3a1210c5d5%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-dev\] 20200213 Re: 7.7.3 bugfix release](https://lists.apache.org/thread.html/r339865b276614661770c909be1dd7e862232e3ef0af98bfd85686b51%40%3Cdev.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-dev\] 20200214 Re: 7.7.3 bugfix release](https://lists.apache.org/thread.html/r19d23e8640236a3058b4d6c23e5cd663fde182255f5a9d63e0606a66%40%3Cdev.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20200219 \[jira\] \[Updated\] (SOLR-14025) CVE-2019-17558: Velocity response writer RCE vulnerability persists after 8.3.1](https://lists.apache.org/thread.html/rafc939fdd753f55707841cd5886fc7fcad4d8d8ba0c72429b3220a9a%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[ambari-issues\] 20200220 \[jira\] \[Created\] (AMBARI-25482) solr dependence CVE-2019-17558](https://lists.apache.org/thread.html/rde3dbd8e646dabf8bef1b097e9a13ee0ecbdb8441aaed6092726c98d%40%3Cissues.ambari.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-solr-user\] 20200320 CVEs (vulnerabilities) that apply to Solr 8.4.1](https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%40%3Csolr-user.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-solr-user\] 20200320 Re: CVEs (vulnerabilities) that apply to Solr 8.4.1](https://lists.apache.org/thread.html/rf5230a049d989dbfdd404b4320a265dceeeba459a4d04ec21873bd55%40%3Csolr-user.lucene.apache.org%3E) (lists.apache.org) mailing-list - [oracle.com/security-alerts/cpuoct2020.html](https://www.oracle.com/security-alerts/cpuoct2020.html) - [issues.apache.org/jira/browse/SOLR-13971](https://issues.apache.org/jira/browse/SOLR-13971) - [packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velo…](http://packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.html) - [\[submarine-commits\] 20201209 \[GitHub\] \[submarine\] QiAnXinCodeSafe opened a new issue #474: There is a vulnerability in Apache Solr 5.5.4,upgrade recommended](https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%40%3Ccommits.submarine.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-solr-user\] 20210203 Re: SolrCloud keeps crashing](https://lists.apache.org/thread.html/r79c7e75f90e735fd32c4e3e97340625aab66c09dfe8c4dc0ab768b69%40%3Csolr-user.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20210210 \[GitHub\] \[lucene-solr\] rhtham edited a comment on pull request #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/re8d12db916b5582a23ed144b9c5abd0bea0be1649231aa880f6cbfff%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20210210 \[GitHub\] \[lucene-solr\] rhtham commented on pull request #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r8a36e4f92f4449dec517e560e1b55639f31b3aca26c37bbad45e31de%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-solr-user\] 20210212 CVE-2019-17558 on SOLR 6.1](https://lists.apache.org/thread.html/r7b89b3dcfc1b6c52dd8d610b897ac98408245040c92b484fe97a51a2%40%3Csolr-user.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-solr-user\] 20210212 Re: CVE-2019-17558 on SOLR 6.1](https://lists.apache.org/thread.html/r8e7a3c253a695a7667da0b0ec57f9bb0e31f039e62afbc00a1d96f7b%40%3Csolr-user.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-solr-user\] 20210213 Re: CVE-2019-17558 on SOLR 6.1](https://lists.apache.org/thread.html/r5dc200f7337093285bac40e6d5de5ea66597c3da343a0f7553f1bb12%40%3Csolr-user.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-issues\] 20210315 \[GitHub\] \[lucene-solr\] erikhatcher commented on pull request #1156: SOLR-13971: CVE-2019-17558: Velocity custom template RCE vulnerability](https://lists.apache.org/thread.html/r7f21ab40a9b17b1a703db84ac56773fcabacd4cc1eb5c4700d17c071%40%3Cissues.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[druid-commits\] 20210324 \[GitHub\] \[druid\] jihoonson opened a new pull request #11030: Suppress cves](https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache.org%3E) (lists.apache.org) mailing-list ## Timeline 1. ID reserved Oct 14, 2019 2. Record published Dec 30, 2019 3. Added to CISA KEV Nov 3, 2021 4. Record last updated Oct 21, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:35 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)