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CVE-2019-17558

98
FAUCET Score

CVE-2019-17558 is a Remote Code Execution (RCE) vulnerability affecting Apache Solr versions 5.0.0 through 8.3.1, including Oracle Primavera Unifier which incorporates Solr. This flaw allows attackers to execute arbitrary code via malicious Velocity templates, either through a configset or, if enabled, via a parameter. The vulnerability carries a high CVSS score of 7.5 due to its network-based attack vector, high impact on confidentiality, integrity, and availability, and relatively low privileges required. It is actively exploited in the wild, with readily available exploit modules in Metasploit and Nuclei, and has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0, < 7.7.3CPE matchmatch criteria
cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
>= 8.0.0, < 8.4.0CPE matchmatch criteria
cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
>= 17.7, <= 17.12CPE matchmatch criteria
cpe:2.3:a:oracle:primavera_unifier:*:*:*:*:*:*:*:*
16.1CPE matchmatch criteria
cpe:2.3:a:oracle:primavera_unifier:16.1:*:*:*:*:*:*:*
16.2CPE matchmatch criteria
cpe:2.3:a:oracle:primavera_unifier:16.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
98.57%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Added to KEV · Nov 3, 2021
Metasploit: Apache Solr Remote Code Execution via Velocity Template · Oct 29, 2019
Nuclei: CVE-2019-17558 · Sep 3, 2020
ExploitDB: EDB-48338 · Apr 16, 2020
This CVE's current EPSS score of 0.9857 is in the 100th percentile among its peer group of 1,160 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.apache.solr:solr-coreFixed in: 8.4.0

Vendor Advisories (2)

mavenGHSA-ww97-9w65-2crxhigh

Improper Input Validation in Apache Solr

Feb 12, 2020
redhatCVE-2019-17558Moderate

solr: Remote Code Execution through the VelocityResponseWriter

Dec 30, 2019

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
issues.apache.org / jira/browse/SOLR-13971
ExploitIssue TrackingPatchVendor Advisory
lists.apache.org / thread.html/r0b7b9d4113e6ec1ae1d3d0898c645f758511107ea44f0f3a1210c5d5%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r12ab2cb15a34e49b4fecb5b2bdd7e10f3e8b7bf1f4f47fcde34d3a7c%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r19d23e8640236a3058b4d6c23e5cd663fde182255f5a9d63e0606a66%40%3Cdev.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache.org%3E
Mailing List
lists.apache.org / thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%40%3Csolr-user.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r25f1bd4545617f5b86dde27b4c30fec73117af65598a30e20209739a%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r339865b276614661770c909be1dd7e862232e3ef0af98bfd85686b51%40%3Cdev.lucene.apache.org%3E
Issue TrackingMailing List
lists.apache.org / thread.html/r36e35fd76239a381643555966fb3e72139e018d52d76544fb42f96d8%40%3Cissues.lucene.apache.org%3E
Issue TrackingMailing List
lists.apache.org / thread.html/r5074d814d3a8c75df4b20e66bfd268ee0a73ddea7e85070cec3ae78d%40%3Cissues.lucene.apache.org%3E
ExploitMailing List
lists.apache.org / thread.html/r58c58fe51c87bc30ee13bb8b4c83587f023edb349018705208e65b37%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r5dc200f7337093285bac40e6d5de5ea66597c3da343a0f7553f1bb12%40%3Csolr-user.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r79c7e75f90e735fd32c4e3e97340625aab66c09dfe8c4dc0ab768b69%40%3Csolr-user.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r7b89b3dcfc1b6c52dd8d610b897ac98408245040c92b484fe97a51a2%40%3Csolr-user.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r7f21ab40a9b17b1a703db84ac56773fcabacd4cc1eb5c4700d17c071%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r8a36e4f92f4449dec517e560e1b55639f31b3aca26c37bbad45e31de%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r8e7a3c253a695a7667da0b0ec57f9bb0e31f039e62afbc00a1d96f7b%40%3Csolr-user.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r9271d030452170ba6160c022757e1b5af8a4c9ccf9e04164dec02e7f%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/r99c3f7ec3a079e2abbd540ecdb55a0e2a0f349ca7084273a12e87aeb%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/ra29fa6ede5184385bf2c63e8ec054990a7d4622bba1d244bee70d82d%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/rafc939fdd753f55707841cd5886fc7fcad4d8d8ba0c72429b3220a9a%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/rb964fe5c4e3fc05f75e8f74bf6b885f456b7a7750c36e9a8045c627a%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%40%3Ccommits.submarine.apache.org%3E
Mailing List
lists.apache.org / thread.html/rde3dbd8e646dabf8bef1b097e9a13ee0ecbdb8441aaed6092726c98d%40%3Cissues.ambari.apache.org%3E
Mailing List
lists.apache.org / thread.html/re8d12db916b5582a23ed144b9c5abd0bea0be1649231aa880f6cbfff%40%3Cissues.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/rf5230a049d989dbfdd404b4320a265dceeeba459a4d04ec21873bd55%40%3Csolr-user.lucene.apache.org%3E
Mailing List
lists.apache.org / thread.html/rf6d7ffae2b940114324e036b6394beadf27696d051ae0c4a5edf07af%40%3Cissues.lucene.apache.org%3E
ExploitMailing List
oracle.com / security-alerts/cpuoct2020.html
Third Party Advisory