Vulnerability Description
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, ConsulDiscoveryClient constructs ConsulServiceInstance objects by parsing each registration's secure metadata with a strict Boolean conversion. A principal that can register a Consul service can supply a secure value other than true or false, causing the exception from one instance to abort construction of the entire instance list and make the targeted service undiscoverable. When GetAllInstancesAsync enumerates all services, one malformed instance can abort enumeration across every service. The outage persists until the offending registration is removed. This issue is fixed in version 4.3.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/SteeltoeOSS/Steeltoe/commit/028569c4f4f0e9e393e3c22a4fa5d0798
- https://github.com/SteeltoeOSS/Steeltoe/releases/tag/4.3.0
- https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-67c9
FAQ
What is CVE-2026-81516?
CVE-2026-81516 is a vulnerability with a CVSS score of 7.5 (HIGH). Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, ConsulDiscoveryClient constructs ConsulServiceInsta...
How severe is CVE-2026-81516?
CVE-2026-81516 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-81516?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.