CVE-2026-81516
Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS)
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 17, 2026
- Updated
- Sep 17, 2026
- Reserved
- Aug 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
- CWE-755 Improper Handling of Exceptional Conditions
Affected Products
| Product | Versions |
|---|---|
security-advisoriesSteeltoeOSS |
|
References
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