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High 7.5Known exploited (CISA KEV)Published Dec 30, 2019

CVE-2019-17558Apache Solr 5.0.0 to Apache Solr 8.3.1 are vulnerable to a Remote Code Execution through the VelocityResponseWriter.

Updated under an hour ago ()

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It affects apache solr and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by May 3, 2022. Treat that date as your deadline.

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).

CVSS
7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-74
Known exploited
Added to CISA KEV Nov 3, 2021; federal remediation due May 3, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days)
98.57% (percentile 100)
Assigned by
apache
NVD analysis
Analyzed
Record last updated
Oct 21, 2025
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
apache solr
apache:solr
from 5.0.0 before 7.7.3; from 8.0.0 before 8.4.0
NVD
oracle primavera_unifier
oracle:primavera_unifier
from 17.7 through 17.12; 16.1; 16.2; 18.8; 19.12
NVD

References

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  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist, issue-tracking
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  • x-refsource-misc
  • x-refsource-misc, exploit, issue-tracking, patch, vendor-advisory
  • x-refsource-misc, exploit, third-party-advisory, vdb-entry
  • mailing-list, x-refsource-mlist
  • mailing-list, x-refsource-mlist
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The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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