CVE-2026-111998 vanus-labs CVE debrief

Who should care

Vanus users and administrators should assess their exposure and verify the presence of hardcoded admin credentials in their deployments. This vulnerability requires immediate attention to prevent potential exploitation.

Why it matters

CVE-2026-111998 is a critical vulnerability in Vanus versions 0.8.0 through 0.9.0, featuring hardcoded admin credentials. Vanus users and administrators should assess their exposure and verify the presence of hardcoded admin credentials in their deployments to prevent potential exploitation.

• Potential unauthorized access to sensitive resources
• Possible exploitation by remote attackers
• Need for verification of Vanus version and hardcoded credentials
• Priority for updating to a fixed version if available

Technical summary

The vulnerability exists in Vanus versions 0.8.0 through 0.9.0, where a default admin token is present, allowing unauthenticated remote attackers to gain cluster-admin access. The hardcoded token can be sent to the gateway gRPC proxy port to manage sensitive resources and read or publish events. This vulnerability has a critical CVSS score of 9.3, emphasizing the need for immediate verification and remediation by Vanus users and administrators. Affected deployments should prioritize updating to a fixed version if available.

Defensive priority

High priority for Vanus users to verify and remediate

Recommended defensive actions

• Verify Vanus version and check for hardcoded admin credentials
• Restrict access to the gateway gRPC proxy port
• Monitor for suspicious activity and update to a fixed version if available
• 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 and NVD entry provide details on the vulnerability, including its critical CVSS score of 9.3. However, the vendor and affected versions are not clearly stated, requiring 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.