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archivevulnerability · 17 Sep 2026 · 20:30 UTC

GHSA-67c9-f6v2-qv86: Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS)

VULNCVE-2026-81516source · GTH
HIGHHigh-risk vulnerability — CVSS 7.5

last 60 dispatches · spectrum

## Summary Steeltoe's Consul discovery client parses the `secure` metadata field on each registered service instance using `bool.Parse`, which throws on any value other than `true` or `false`. A single service instance registered with a malformed `secure` value (for example `yes` or `1`) aborts construction of the entire instance list for that service, making the service undiscoverable. When `GetAllInstancesAsync` is used, one malformed instance in any service can abort enumeration across all services. …

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