---
id: CVE-2026-76905
title: kin-openapi is a Go project for handling OpenAPI files
summary: >-
  kin-openapi is a Go project for handling OpenAPI files. From 0.10.0 until
  0.141.0, openapi3filter.convertParseError in
  openapi3filter/validation_error_encoder.go dereferences e.Parameter.In without
  checking whether e.Parameter is nil. A …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
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
  - 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 0.141.0
published: '2026-08-21'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:06:39.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76905'
references:
  - url: >-
      https://github.com/getkin/kin-openapi/commit/1d0a337c9b1570fab283be8a04c8af6e43b9a22c
    label: security-advisories@github.com
  - url: 'https://github.com/getkin/kin-openapi/releases/tag/v0.141.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/getkin/kin-openapi/security/advisories/GHSA-mmfr-pmjx-hw9w
    label: security-advisories@github.com
  - url: >-
      https://github.com/getkin/kin-openapi/security/advisories/GHSA-mmfr-pmjx-hw9w
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-76905.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-76905'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2521202'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-76905'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76905'
  - url: 'https://github.com/advisories/GHSA-mmfr-pmjx-hw9w'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - ghsa
  - go
  - score-dispute
epss: 0.00609
epssPercentile: 0.46923
aliases:
  - GHSA-mmfr-pmjx-hw9w
ecosystem: go
scores:
  nvd: 7.5
  vendor: 5.3
  ghsa: 7.5
ingestedAt: '2026-08-21T21:22:19.585Z'
---

## Overview

kin-openapi is a Go project for handling OpenAPI files. From 0.10.0 until 0.141.0, openapi3filter.convertParseError in openapi3filter/validation_error_encoder.go dereferences e.Parameter.In without checking whether e.Parameter is nil. A malformed non-string scalar field in a multipart/form-data request body produces a nested ParseError with a nil RequestError.Parameter, and applications that render the validation error through openapi3filter.ConvertErrors or ValidationErrorEncoder panic. An unauthenticated client can repeatedly send such requests to deny service when the application lacks a recovery boundary. JSON request bodies and applications that do not use these error-rendering helpers are not affected. This issue is fixed in version 0.141.0.

## Remediation

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

## Package advisory (CVE-2026-76905)

Affected packages:

- `github.com/getkin/kin-openapi >= 0.10.0, < 0.141.0`

Patched in:

- `github.com/getkin/kin-openapi 0.141.0`

Source: https://github.com/advisories/GHSA-mmfr-pmjx-hw9w

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Migration Toolkit for Applications 8, Multicluster Global Hub, OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Ceph Storage 5, Red Hat Ceph Storage 6, … · no fix planned: Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Ceph Storage 5, Red Hat Ceph Storage 6, Red Hat Ceph Storage 7, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-76905.json)