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Medium5.5F5

Medium [CVE-2023-1550] NGINX: Insertion of Sensitive Information into log file vulnerability in NGINX Agent.

This medium-severity F5 advisory covers CVE-2023-1550 affecting NGINX.

CVE-2023-1550 Published Mar 29, 2023Updated by vendor Jun 17, 2026
Affected products & platforms
F5NGINX
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Summary

Insertion of Sensitive Information into log file vulnerability in NGINX Agent. An authenticated attacker with local access to read agent log files may gain access to private keys.

This issue is only exposed when the non-default trace level logging is enabled. Note: NGINX Agent is included with NGINX Instance Manager and used in conjunction with NGINX API Connectivity Manager, and NGINX Management Suite Security Monitoring.

Affected versions
  • 2.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 2.23.3

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 2.23.3. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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