CVE-2026-100349

CVE-2026-100349 · kin-openapi openapi3filter: nil-pointer panic in ValidateResponse on a response header declared with content

This page contains facts from public vulnerability sources. Check the original advisory before updating.

kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The document passes validation, but every response validation for the affected operation dereferences the nil schema and panics even when the response does not contain the declared header. Applications that ingest an untrusted specification can expose this as remote availability impact, while applications using only trusted local specifications still crash when the affected operation is exercised. This issue is fixed in version 0.146.0.

CVSS 8.2 · High · EPSS 0.4%

Published

2026-10-15T15:50:37.453Z

Updated

2026-10-16T17:13:28.236Z

Stack: system

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