{"id":"CVE-2026-97394","title":"kin-openapi is a Go project for handling OpenAPI files","summary":"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-w…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-248","CWE-476"],"vendor":"getkin","product":"kin-openapi","affected":["kin-openapi >= 0.136.0, < 0.143.0"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:18:25.457","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97394","references":[{"url":"https://github.com/getkin/kin-openapi/commit/30e292371a89ca6d1f91a9553e0aa518b49f838d","label":"security-advisories@github.com"},{"url":"https://github.com/getkin/kin-openapi/releases/tag/v0.143.0","label":"security-advisories@github.com"},{"url":"https://github.com/getkin/kin-openapi/security/advisories/GHSA-p6wj-qrr4-pgh5","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97394"},{"url":"https://github.com/advisories/GHSA-p6wj-qrr4-pgh5"},{"url":"https://github.com/getkin/kin-openapi"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97394.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97394"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2553575"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97394"},{"url":"https://access.redhat.com/errata/RHSA-2026:76677"},{"url":"https://access.redhat.com/errata/RHSA-2026:76448"},{"url":"https://access.redhat.com/errata/RHSA-2026:76430"},{"url":"https://access.redhat.com/errata/RHSA-2026:82637"}],"tags":["nvd","cve.org","ghsa","go","osv","csaf","vex","red-hat","exploit-available"],"ingestedAt":"2026-10-15T16:13:11.357Z","aliases":["GHSA-p6wj-qrr4-pgh5"],"ecosystem":"go","patched":["github.com/getkin/kin-openapi 0.143.0"],"epss":0.00615,"epssPercentile":0.49241,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-20T02:44:45.924107Z"},"slug":"CVE-2026-97394","body":"## Overview\n\nkin-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-97394)\n\nAffected packages:\n\n- `github.com/getkin/kin-openapi >= 0.136.0, < 0.143.0`\n\nPatched in:\n\n- `github.com/getkin/kin-openapi 0.143.0`\n\nSource: https://github.com/advisories/GHSA-p6wj-qrr4-pgh5\n\n## Vendor advisories\n\n- **RHSA-2026:76677** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-06 · [advisory](https://access.redhat.com/errata/RHSA-2026:76677)\n- **RHSA-2026:76448** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:76448)\n- **RHSA-2026:76430** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:76430)\n- **RHSA-2026:82637** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:82637)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":225358,"id":"CVE-2026-97394","ts":1792468353141,"field":"exploit_available","old":"false","new":"true"}]}