NULL pointer dereference in Getkin Kin-Openapi
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Getkin Kin-Openapi — versions >= 0.136.0, < 0.143.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-97394?
- CVE-2026-97394 is a high-severity vulnerability in Getkin Kin-Openapi, classified under CWE-248. CVSS score: 7.5/10. Published 2026-10-15.
- How severe is CVE-2026-97394?
- High severity. CVSS v3 base score is 7.5 out of 10.