CVE-2026-58167 ccfos CVE debrief

Who should care

Defenders responsible for Nightingale instances, especially those with low-privilege user access, should assess exposure and prioritize remediation. They should verify the exposure of datasource configurations and sensitive credentials, remediate vulnerable Nightingale instances to prevent credential disclosure, and implement compensating controls for downstream systems.

Why it matters

CVE-2026-58167 allows low-privilege users to access sensitive datasource configurations, enabling potential access to connected downstream systems. Defenders should prioritize verifying exposure, remediating vulnerable instances, and implementing compensating controls.

• Verify exposure of datasource configurations and sensitive credentials
• Remediate vulnerable Nightingale instances to prevent credential disclosure
• Implement compensating controls for downstream systems
• Monitor and track exceptions for potential credential misuse

Technical summary

Nightingale (n9e) before 9.0.0-beta.2 exposes full datasource configurations, including plaintext database passwords, HTTP bearer tokens, HTTP basic-auth passwords, and mTLS client keys, to any authenticated low-privilege (Standard role) user through POST /api/n9e/datasource/list. The route lacks an admin authorization gate, and the DatasourceFilter does not redact secret fields, serializing sensitive settings, http, and auth objects in the response.

Defensive priority

Defenders should prioritize verifying exposure and remediating vulnerable Nightingale instances, especially those with low-privilege user access.

Recommended defensive actions

• Verify Nightingale instance version and exposure to vulnerable datasource configurations
• Restrict access to datasource configurations and sensitive credentials
• Implement compensating controls, such as monitoring and exception tracking, for downstream systems
• Update to version 9.0.0-beta.2 or later
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability, including the affected version and fixed version. However, the exact scope of affected instances and downstream systems requires further verification.

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.