CVE-2026-66379 jfrog CVE debrief

Who should care

Administrators and users of Puppet modules, especially those with sensitive metadata, should review access controls and verify user permissions to prevent unauthorized metadata access. This includes reviewing the access controls for Puppet module metadata, verifying user permissions, and monitoring for unauthorized metadata access attempts. Additionally, defenders should consider the operational impact of this vulnerability on their systems and plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Technical summary

CVE-2026-66379 is a medium-severity vulnerability that allows authenticated users to view private Puppet module metadata without repository read access. The vulnerability has a CVSS score of 4.3 and is classified as CWE-862. This vulnerability affects Puppet modules, especially those with sensitive metadata. Administrators and users of Puppet modules should review access controls and verify user permissions to prevent unauthorized metadata access. The official CVE Program record and the NIST NVD detail page provide more information about this vulnerability.

Defensive priority

Authenticated users may be able to view private Puppet module metadata. Review access controls for Puppet module metadata and verify user permissions.

Recommended defensive actions

• Review access controls for Puppet module metadata
• Verify user permissions for metadata access
• Monitor for unauthorized metadata access attempts

Evidence notes

The CVE record indicates that an authenticated user may view private Puppet module metadata without repository read access. The CVSS score is 4.3, indicating a medium severity vulnerability. This information is based on the official CVE Program record and the NIST NVD detail page. However, the specific details about the vulnerability, such as the affected products and versions, are limited. Defenders should verify the affected scope and severity with the official advisory or CVE record. Additionally, they should review access controls for Puppet module metadata and verify user permissions to prevent unauthorized metadata access.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.