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TI-2026-74661 Aliases CVE-2026-97394GHSA-p6wj-qrr4-pgh5

kin-openapi nil pointer panic in openapi3filter on array schemas without items

Priority HIGH 72CWE-248Published · 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 · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-248.

Summary

kin-openapi from 0.136.0 before 0.143.0 is affected, including the Go module github.com/getkin/kin-openapi. The openapi3filter package accepts OpenAPI 3.1 array schemas that lack an items keyword and then dereferences the nil items value while decoding form or multipart request bodies, response headers, and other array parameters. A remote unauthenticated client can send a nonempty request or matching response to an affected operation and trigger a nil pointer panic during ValidateRequest or ValidateResponse (CWE-476).

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

kin-openapi is a Go project for handling OpenAPI files. From 0.136.0 until 0.143.0, openapi3filter accepts OpenAPI 3.1 array schemas without an items keyword and then dereferences the nil Schema.Items value while decoding application/x-www-form-urlencoded or multipart/form-data request bodies, response headers, and other array parameter surfaces. A remote unauthenticated client can reach an affected operation with a nonempty request or matching response and deterministically trigger a nil-pointer panic during ValidateRequest or ValidateResponse. OpenAPI 3.0 documents are not affected because document validation rejects arrays without items, and JSON request bodies use a different decoder path. This issue is fixed in version 0.143.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00615 49th percentileScored 2026-11-07
Fix Fixed kin-openapi (getkin): 0.143.0github.com/getkin/kin-openapi (Go): 0.143.0Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
getkinkin-openapi0.136.0 to before 0.143.00.143.0Patch availableCNA
—github.com/getkin/kin-openapi (Go)0.136.0 to before 0.143.00.143.0Patch availableGHSA-p6wj-qrr4-pgh5
  • kin-openapi Vendorgetkin Affected 0.136.0 to before 0.143.0 Fixed in 0.143.0 Patch available CNA
  • github.com/getkin/kin-openapi (Go) Vendor— Affected 0.136.0 to before 0.143.0 Fixed in 0.143.0 Patch available GHSA-p6wj-qrr4-pgh5

Remediation

Upgrade kin-openapi and the github.com/getkin/kin-openapi Go module to version 0.143.0. Red Hat fixes Red Hat Hardened Images with RPM updates RHSA-2026:82637, RHSA-2026:76677, RHSA-2026:76448 and RHSA-2026:76430.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA kin-openapi (getkin) Fixed in 0.143.0
  • Fix · GHSA-p6wj-qrr4-pgh5 github.com/getkin/kin-openapi (Go) Fixed in 0.143.0 Advisory →

Red Hat 4 advisories

  • RHSA-2026:82637 Released 2026-10-14 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images hugo-0.168.0-0.1.hum1@aarch64, hugo-0.168.0-0.1.hum1@s390x, hugo-0.168.0-0.1.hum1@src +1
  • RHSA-2026:76677 Released 2026-10-06 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana12.4-12.4.12-0.4.hum1@aarch64, grafana12.4-12.4.12-0.4.hum1@src, grafana12.4-12.4.12-0.4.hum1@x86_64
  • RHSA-2026:76448 Released 2026-10-05 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana13.1-13.1.7-0.1.hum1@aarch64, grafana13.1-13.1.7-0.1.hum1@src, grafana13.1-13.1.7-0.1.hum1@x86_64
Show 1 more Red Hat advisories
  • RHSA-2026:76430 Released 2026-10-05 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana13.2-13.2.3-0.1.hum1@aarch64, grafana13.2-13.2.3-0.1.hum1@src, grafana13.2-13.2.3-0.1.hum1@x86_64

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:76430, RHSA-2026:76448, RHSA-2026:76677, RHSA-2026:82637
Not affected: 2 products
  • Red Hat Hardened Images
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-97394
  2. 2026-10-16 Alias added: GHSA-p6wj-qrr4-pgh5
  3. 2026-10-16 Priority changed: MEDIUM → LOW
  4. 2026-10-18 Fix available: RHSA-2026:82637 · Red Hat
  5. 2026-10-18 Fix available: RHSA-2026:76430 · Red Hat
  6. 2026-10-18 Fix available: RHSA-2026:76677 · Red Hat
  7. 2026-10-18 Fix available: RHSA-2026:76448 · Red Hat
  8. 2026-10-18 Fix available: Red Hat Hardened Images · Red Hat
  9. 2026-10-18 CVSS score added · Red Hat
  10. 2026-10-20 CISA SSVC decision points changed
  11. 2026-10-20 Priority changed: LOW → HIGH
  12. 2026-11-06 Affected versions changed · Red Hat
  13. 2026-11-06 Affected versions changed · Red Hat

References

Advisory 1

Other 4

  • 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-2026-74657 Uncontrolled recursion in kin-openapi crashes the process CVSS 3.1HIGH 7.5
  • TI-2026-53730 NULL pointer dereference in getkin kin-openapi CVSS 3.1HIGH 7.5
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences