NULL pointer dereference in getkin kin-openapi
Priority MEDIUM 57CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 6 fixed, 18 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-476.
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/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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00507 43rd percentileScored 2026-11-07
Fix Partial kin-openapi (getkin): 0.144.0github.com/getkin/kin-openapi (Go): 0.144.0Red Hat: 7 advisoriesRed Hat: 6 fixed, 18 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| getkin | kin-openapi | 0.2.0 to before 0.144.0 | 0.144.0 | Patch available | CNA |
| — | github.com/getkin/kin-openapi (Go) | before 0.144.0 | 0.144.0 | Patch available | GHSA-jpcw-4wr7-c3vq |
- kin-openapi Vendorgetkin Affected 0.2.0 to before 0.144.0 Fixed in 0.144.0 Patch available CNA
- github.com/getkin/kin-openapi (Go) Vendor— Affected before 0.144.0 Fixed in 0.144.0 Patch available GHSA-jpcw-4wr7-c3vq
Remediation
- Fix · CNA kin-openapi (getkin) Fixed in 0.144.0
- Fix · GHSA-jpcw-4wr7-c3vq github.com/getkin/kin-openapi (Go) Fixed in 0.144.0 Advisory →
Red Hat 7 advisories
- RHSA-2026:95517 Released 2026-11-05 · Red Hat rating ImportantMulticluster Global Hub 1.7.4 security update
- Multicluster Global Hub 1.7.4 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +1
- RHSA-2026:94612 Released 2026-11-03 · Red Hat rating ImportantRed Hat Edge Manager Version 1.2.2 Security Update
- Red Hat Edge Manager 1.2 registry.redhat.io/rhem/flightctl-alert-exporter-rhel10, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel10, registry.redhat.io/rhem/flightctl-api-rhel10 +11
- RHSA-2026:94608 Released 2026-11-03 · Red Hat rating ImportantRed Hat Edge Manager Version 1.2.2 Security Update
- Red Hat Edge Manager 1.2 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +11
Show 4 more Red Hat advisories
- RHSA-2026:87410 Released 2026-10-21 · Red Hat rating CriticalRHOAI 2.25.12 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-caikit-nlp-rhel9, registry.redhat.io/rhoai/odh-codeflare-operator-rhel9 +47
- RHSA-2026:86891 Released 2026-10-21 · Red Hat rating CriticalRHOAI 3.5.2 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-cli-rhel9 +47
- RHSA-2026:84734 Released 2026-10-19 · Red Hat rating CriticalRHOAI 3.4.5 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
- RHSA-2026:82315 Released 2026-10-13 · Red Hat rating ImportantMigration Toolkit for Applications
- Red Hat Migration Toolkit for Applications 8.2 registry.redhat.io/mta/mta-cli-rhel9, registry.redhat.io/mta/mta-hub-rhel9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Migration Toolkit for Applications 8 | Affected | No fix yet: Fix deferred |
| Multicluster Engine for Kubernetes | Affected | No fix yet: Fix deferred |
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| Red Hat 3scale API Management Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 5 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 6 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 7 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 8 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift GitOps | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 18.0 | Affected | No fix yet: Fix deferred |
| Red Hat Service Interconnect 2 | Affected | No fix yet |
| Multicluster Global Hub 1.7.4 | Fixed | RHSA-2026:95517 |
| Red Hat Edge Manager 1.2 | Fixed | RHSA-2026:94608, RHSA-2026:94612 |
| Red Hat Migration Toolkit for Applications 8.2 | Fixed | RHSA-2026:82315 |
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:87410 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:84734 |
| Red Hat OpenShift AI 3.5 | Fixed | RHSA-2026:86891 |
Not affected: 13 products
- Multicluster Global Hub 1.7.4
- OpenShift Serverless
- Red Hat Edge Manager 1
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat Migration Toolkit for Applications 8.2
- Red Hat OpenShift AI 2.25
- Red Hat OpenShift AI 3.4
- Red Hat OpenShift AI 3.5
- Red Hat OpenShift Container Platform 4
- Red Hat Service Interconnect 2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73502
- 2026-10-03 Alias added: GHSA-jpcw-4wr7-c3vq
- 2026-10-14 Fix available: RHSA-2026:82315 · Red Hat
- 2026-10-15 Fix available: Red Hat Migration Toolkit for Applications 8.2 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
- 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:86891 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
- 2026-10-23 Fix available: Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.5 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-31 Affected versions changed · Red Hat
- 2026-11-04 Fix available: RHSA-2026:94612 · Red Hat
- 2026-11-04 Fix available: RHSA-2026:94608 · Red Hat
- 2026-11-04 Fix available: Red Hat Edge Manager 1.2 · Red Hat
- 2026-11-06 Fix available: Multicluster Global Hub 1.7.4 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95517 · Red Hat
References
More getkin vulnerabilities
- TI-2026-51613 kin-openapi: ValidationHandler.Load() Fail-Open Authentication Bypass via NoopAuthenticationFunc Default CVSS 3.1CRITICAL 9.1
- TI-2026-53976 kin-openapi: Uncontrolled resource consumption in openapi3filter deepObject query parameter decoding CVSS 4.0HIGH 8.7
- TI-2026-74664 Nil pointer panic in kin-openapi openapi3filter decoding CVSS 3.1HIGH 7.5
- TI-2026-74663 YAML NaN and Inf values cause panic in kin-openapi validation CVSS 3.1HIGH 7.5
- TI-2026-74661 kin-openapi nil pointer panic in openapi3filter on array schemas without items CVSS 3.1HIGH 7.5
- TI-2026-74657 Uncontrolled recursion in kin-openapi crashes the process CVSS 3.1HIGH 7.5
Sources
- CVE-2026-73502 · CVE Program
- CVE-2026-73502 · NVD
- FIRST EPSS
- GHSA-jpcw-4wr7-c3vq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-73502 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences