NULL pointer dereference in Getkin Kin-Openapi
CVE-2026-100348
kin-openapi is a Go project for handling OpenAPI files. Prior to 0.145.0, openapi3.Loader can dereference a nil SchemaRef.Value while resolving a self-referential additionalProperties JSON Reference such as a schema that points to its own additionalProperties member. Loading an attacker-controlled OpenAPI document through LoadFromData, LoadFromFile, or LoadFromURI reaches resolveComponent before document validation and can panic the loading process. Resolved additionalProperties schemas and ordinary recursive schemas do not take the vulnerable nil-value path. This issue is fixed in version 0.145.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
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 < 0.145.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-100348?
- CVE-2026-100348 is a medium-severity vulnerability in Getkin Kin-Openapi, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2026-10-15.
- How severe is CVE-2026-100348?
- Medium severity. CVSS v3 base score is 5.3 out of 10.