---
id: CVE-2026-73502
title: kin-openapi is a Go project for handling OpenAPI files
summary: >-
  kin-openapi is a Go project for handling OpenAPI files. From 0.2.0 until
  0.144.0, openapi3filter.ValidateRequest can encounter a
  NULL-pointer-dereference denial of service when an operation declares a
  content parameter whose application/…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-476
vendor: Red Hat
product: Red Hat Edge Manager 1
affected:
  - migration_toolkit_for_applications 8
  - multicluster_engine_for_kubernetes
  - multicluster_global_hub
  - openshift_serverless
  - 3scale_api_management_platform 2
  - advanced_cluster_management_for_kubernetes 2
  - ceph_storage 5
  - ceph_storage 6
  - ceph_storage 7
  - ceph_storage 8
  - ceph_storage 9
  - edge_manager 1
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_ai_rhoai
  - openshift_container_platform 4
  - openshift_gitops
  - openstack_platform 18.0
  - service_interconnect 2
patched:
  - github.com/getkin/kin-openapi 0.144.0
published: '2026-08-18'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:09:01.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73502'
references:
  - url: >-
      https://github.com/getkin/kin-openapi/commit/68ac2affa325514d7d6e731204d6a1edf6bdff64
    label: security-advisories@github.com
  - url: 'https://github.com/getkin/kin-openapi/releases/tag/v0.144.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/getkin/kin-openapi/security/advisories/GHSA-jpcw-4wr7-c3vq
    label: security-advisories@github.com
  - url: >-
      https://github.com/getkin/kin-openapi/security/advisories/GHSA-jpcw-4wr7-c3vq
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73502.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-73502'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2518119'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-73502'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73502'
  - url: 'https://github.com/getkin/kin-openapi'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - osv
  - go
epss: 0.00507
epssPercentile: 0.40629
aliases:
  - GHSA-jpcw-4wr7-c3vq
ecosystem: go
ingestedAt: '2026-08-13T19:18:21.232Z'
---

## Overview

kin-openapi is a Go project for handling OpenAPI files. From 0.2.0 until 0.144.0, openapi3filter.ValidateRequest can encounter a NULL-pointer-dereference denial of service when an operation declares a content parameter whose application/json media type has no schema. In openapi3filter/req_resp_decoder.go, the default defaultContentParameterDecoder dereferences mt.Schema.Value without checking whether mt.Schema is nil, even though doc.Validate() accepts the document under OpenAPI 3.0.x and 3.1.x. A single unauthenticated request supplying the parameter value can panic request validation, causing an aborted request with log growth in the common synchronous net/http path or a full process crash in integrations without recovery. This issue is fixed in version 0.144.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-73502)

Affected packages:

- `github.com/getkin/kin-openapi < 0.144.0`

Patched in:

- `github.com/getkin/kin-openapi 0.144.0`

Source: https://osv.dev/vulnerability/GHSA-jpcw-4wr7-c3vq

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Migration Toolkit for Applications 8, Multicluster Engine for Kubernetes, Multicluster Global Hub, OpenShift Serverless, Red Hat 3scale API Management Platform 2, Red Hat Advanced Cluster Management for Kubernetes 2, … · no fix planned: Migration Toolkit for Applications 8, Multicluster Engine for Kubernetes, Multicluster Global Hub, OpenShift Serverless, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73502.json)