---
title: "kin-openapi - Denial of Service"
description: "kin-openapi 0.136.0 to 0.143.0 contains a null pointer dereference caused by accepting OpenAPI 3.1 array schemas without an items keyword in openapi3filter, letting remote unauthenticated clients trigger a panic during request or response validation, exploit requires sending nonempty requests or matching responses."
url: https://panop.io/threat-heartbeat/CVE-2026-97394/
---

# CVE-2026-97394 kin-openapi - Denial of Service

kin-openapi 0.136.0 to 0.143.0 contains a null pointer dereference caused by accepting OpenAPI 3.1 array schemas without an items keyword in openapi3filter, letting remote unauthenticated clients trigger a panic during request or response validation, exploit requires sending nonempty requests or matching responses.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-97394)

## Details

Type

Null Pointer Dereference

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

15 October 2026

Updated

16 October 2026

Weakness

[CWE-248](https://cwe.mitre.org/data/definitions/248.html)

## Vendor fix

Upgrade to version 0.143.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-97394](https://nvd.nist.gov/vuln/detail/CVE-2026-97394)
- [https://github.com/getkin/kin-openapi/commit/30e292371a89ca6d1f91a9553e0aa518b49f838d](https://github.com/getkin/kin-openapi/commit/30e292371a89ca6d1f91a9553e0aa518b49f838d)
- [https://github.com/getkin/kin-openapi/releases/tag/v0.143.0](https://github.com/getkin/kin-openapi/releases/tag/v0.143.0)
- [https://github.com/getkin/kin-openapi/security/advisories/GHSA-p6wj-qrr4-pgh5](https://github.com/getkin/kin-openapi/security/advisories/GHSA-p6wj-qrr4-pgh5)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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