{"id":"CVE-2026-97394","sourceIdentifier":"security-advisories@github.com","published":"2026-10-15T16:18:25.273","lastModified":"2026-10-20T03:17:17.587","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"kin-openapi is a Go project for handling OpenAPI files. From 0.136.0 until 0.143.0, openapi3filter accepts OpenAPI 3.1 array schemas without an items keyword and then dereferences the nil Schema.Items value while decoding application/x-www-form-urlencoded or multipart/form-data request bodies, response headers, and other array parameter surfaces. A remote unauthenticated client can reach an affected operation with a nonempty request or matching response and deterministically trigger a nil-pointer panic during ValidateRequest or ValidateResponse. OpenAPI 3.0 documents are not affected because document validation rejects arrays without items, and JSON request bodies use a different decoder path. This issue is fixed in version 0.143.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"getkin","product":"kin-openapi","versions":[{"version":">= 0.136.0, < 0.143.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-20T02:44:45.924107Z","id":"CVE-2026-97394","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-248"},{"lang":"en","value":"CWE-476"}]}],"references":[{"url":"https://github.com/getkin/kin-openapi/commit/30e292371a89ca6d1f91a9553e0aa518b49f838d","source":"security-advisories@github.com"},{"url":"https://github.com/getkin/kin-openapi/releases/tag/v0.143.0","source":"security-advisories@github.com"},{"url":"https://github.com/getkin/kin-openapi/security/advisories/GHSA-p6wj-qrr4-pgh5","source":"security-advisories@github.com"},{"url":"https://github.com/opnsense/core/security/advisories/GHSA-26cj-h9rj-g5pf","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}