CVE-2026-97394

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/getkin/kin-openapi/commit/30e292371a89ca6d1f91a9553e0aa518b49f838d
https://github.com/getkin/kin-openapi/releases/tag/v0.143.0
https://github.com/getkin/kin-openapi/security/advisories/GHSA-p6wj-qrr4-pgh5
https://github.com/opnsense/core/security/advisories/GHSA-26cj-h9rj-g5pf

Configurations

No configuration.

History

20 Oct 2026, 03:17

Type	Values Removed	Values Added
References		() https://github.com/opnsense/core/security/advisories/GHSA-26cj-h9rj-g5pf -

15 Oct 2026, 16:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-15 16:18

Updated : 2026-10-20 03:17

NVD link : CVE-2026-97394

Mitre link : CVE-2026-97394

CVE.ORG link : CVE-2026-97394

JSON object : View

Products Affected

No product.

CWE

CWE-248

Uncaught Exception

CWE-476

NULL Pointer Dereference

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