CVE-2026-59296 VMware CVE debrief

Who should care

Organizations using micrometer-registry-statsd or micrometer-core, especially those using the Datadog or Etsy flavor of the StatsD registry, or LoggingMeterRegistry, should be aware of this vulnerability and take steps to validate and sanitize user-controlled input. This includes reviewing and updating instrumentation to prevent the use of untrusted input and monitoring for suspicious metric or log activity. Security teams and vulnerability management teams should prioritize validating and sanitizing user-controlled input for metric names, tag keys, or tag values to prevent potential attacks. Additionally, operators and platform teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed systems while remediation is scheduled and verified. Monitoring and detection teams should check relevant monitoring, detection, and logs for exposed assets that need extra review. Asset inventory and change management teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. This requires coordination across multiple teams to ensure comprehensive coverage and mitigation of the vulnerability. By taking these steps, organizations can reduce the risk of injection and spoofing attacks and protect their systems from potential exploitation. Security and IT teams should work together to implement these measures and ensure the security and integrity of their systems and data. This vulnerability highlights the importance of input validation and sanitization in preventing security vulnerabilities and the need for proactive measures to protect against potential threats. By prioritizing these efforts, organizations can improve their overall security posture and reduce the risk of successful attacks. Therefore, it is essential for organizations to take immediate action to address this vulnerability and prevent potential security breaches. The CVE record provides detailed information about the vulnerability, and it

Technical summary

The CVE record describes a vulnerability in micrometer-registry-statsd and micrometer-core where using untrusted, non-normalized input as-is for metrics data can lead to injection and spoofing attacks. An application is vulnerable when it uses a vulnerable version of these libraries, uses the Datadog or Etsy flavor of the StatsD registry, or uses LoggingMeterRegistry, and instruments meters using user-controlled, unvalidated input for metric names, tag keys, or tag values. Specifically, micrometer-registry-statsd and micrometer-core do not sanitize newline characters by default prior to this fix.

Defensive priority

Organizations using micrometer-registry-statsd or micrometer-core should prioritize validating and sanitizing user-controlled input for metric names, tag keys, or tag values.

Recommended defensive actions

• Validate and sanitize user-controlled input for metric names, tag keys, or tag values.
• Review and update instrumentation to prevent use of untrusted input.
• Monitor for suspicious metric or log activity.
• 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.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record indicates that using untrusted, non-normalized input as-is for metrics data can lead to injection and spoofing attacks. Specifically, micrometer-registry-statsd and micrometer-core do not sanitize newline characters by default prior to this fix.

Official resources