NULL pointer dereference in Getkin Kin-Openapi
CVE-2026-100353
kin-openapi is a Go project for handling OpenAPI files. From 0.136.0 until 0.149.0, three openapi3filter decoder paths that were missed by the fix for GHSA-p6wj-qrr4-pgh5 lack a nil-items guard for legal OpenAPI 3.1 array schemas. An unauthenticated remote client can trigger a deterministic nil-pointer panic through an array query parameter, a deepObject query parameter containing an array property, or an application/x-www-form-urlencoded request body whose array property appears inside an allOf, anyOf, or oneOf subschema. The query and composed-body paths reach urlValuesDecoder.parseArray, while the deepObject path reaches buildResObj, and all pass a nil items schema into code that dereferences it. This issue is fixed in version 0.149.0.
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, < 0.149.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-100353?
- CVE-2026-100353 is a high-severity vulnerability in Getkin Kin-Openapi, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-10-15.
- How severe is CVE-2026-100353?
- High severity. CVSS v3 base score is 7.5 out of 10.