CVE-2026-73501

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{"affected": [{"affectedData": [{"product": "kin-openapi", "vendor": "getkin", "versions": [{"status": "affected", "version": "< 0.144.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "kin-openapi is a Go project for handling OpenAPI files. Prior to 0.144.0, ValidationHandler.Load() in openapi3filter/validation_handler.go silently replaces a nil AuthenticationFunc with NoopAuthenticationFunc, which returns nil without checking credentials. This substitution causes every OpenAPI security requirement to be satisfied for unauthenticated requests when an application relies on ValidationHandler as its enforcement middleware. The no-op callback prevents the fail-closed ErrAuthenticationServiceMissing path from being reached and forwards the request to protected handlers that may require an API key, OAuth token, or another security scheme. This issue is fixed in version 0.144.0."}, {"lang": "es", "value": "kin-openapi es un proyecto Go para manejar archivos OpenAPI. Antes de la versi\u00f3n 0.144.0, ValidationHandler.Load() en openapi3filter/validation_handler.go reemplaza silenciosamente una AuthenticationFunc nula con NoopAuthenticationFunc, que devuelve nil sin verificar las credenciales. Esta sustituci\u00f3n hace que cada requisito de seguridad de OpenAPI se satisfaga para solicitudes no autenticadas cuando una aplicaci\u00f3n depende de ValidationHandler como su middleware de aplicaci\u00f3n. La devoluci\u00f3n de llamada no-op impide que se alcance la ruta fail-closed ErrAuthenticationServiceMissing y reenv\u00eda la solicitud a manejadores protegidos que pueden requerir una clave API, un token OAuth u otro esquema de seguridad. Este problema se corrige en la versi\u00f3n 0.144.0."}], "id": "CVE-2026-73501", "lastModified": "2026-10-24T15:10:00.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73501", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-13T13:06:12.716245Z", "version": "2.0.3"}}]}, "published": "2026-08-12T22:17:17.443", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/getkin/kin-openapi/commit/f0407d53b0730280266f454b755010e7eeb985da"}, {"source": "security-advisories@github.com", "url": "https://github.com/getkin/kin-openapi/releases/tag/v0.144.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-r277-6w6q-xmqw"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-r277-6w6q-xmqw"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.144.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "kin-openapi", "source": "cna", "vendor": "getkin"}, "product": "kin-openapi", "vendor": "getkin"}], "created": "2026-08-13T02:15:02.664396+00:00", "updated": "2026-08-13T09:47:38.210534+00:00", "vendors": ["getkin", "getkin$PRODUCT$kin-openapi"]}