{"items":[{"id":"NVI-00015374","kind":"vulnerability","title":"Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-67c9-f6v2-qv86","CVE-2026-81516"],"plain_summary":"GitHub lists this reviewed advisory for Steeltoe.Discovery.Consul. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-61d9fad04bf3ebc15b72ccb6827a06a7"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-17T20:30:55.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-61d9fad04bf3ebc15b72ccb6827a06a7"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-61d9fad04bf3ebc15b72ccb6827a06a7","url":"https://github.com/advisories/GHSA-67c9-f6v2-qv86","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-67c9-f6v2-qv86","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-61d9fad04bf3ebc15b72ccb6827a06a7"],"technology":"Steeltoe.Discovery.Consul","known_exclusions":[],"conditions_summary":"## Summary\n\nSteeltoe'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.\nThis is the same \"one malformed field aborts the whole batch\" availability class as CVE-2026-50196, but affecting the Consul discovery client.\n\n## Impact\n\nAny principal that can register a service in the Consul catalog can trigger a service-discovery outage for all Steeltoe applications resolving that service. The outage affects all instances of the targeted service — not just the malformed one — and persists until the offending registration is removed.\n\n## Affected configuration\n\n- Application uses `ConsulDiscoveryClient` (any deployment).\n- The Consul catalog contains at least one service instance with a `secure` metadata value ","public_affected_ranges":[">= 4.0.0, <= 4.2.0"]}],"null_published_at":"2026-11-03T10:03:31.358Z","source_updated_at":"2026-09-17T20:30:55.000Z","source_disclosed_at":"2026-09-17T20:30:54.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T14:29:49.409Z"}],"next_cursor":null,"snapshot_revision":"42594"}