CVE-2026-100348 kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointer DoS)

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-controlle...