NULL Pointer Dereference Affecting github.com/getkin/kin-openapi/openapi3filter package, versions <0.144.0
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- published26 Jul 2026
- disclosed24 Jul 2026
- creditmatiasinsaurralde
Introduced: 24 Jul 2026
New CVE NOT AVAILABLE CWE-476 (opens in a new tab)How to fix?
Upgrade github.com/getkin/kin-openapi/openapi3filter to version 0.144.0 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference through the defaultContentParameterDecoder function. An attacker can cause the application to crash or abort request processing by sending a crafted HTTP request that targets an OpenAPI operation with a content parameter whose media type lacks a schema. This is only exploitable if the OpenAPI specification served by the application contains at least one such parameter and the request validation is not protected by a custom AuthenticationFunc or explicit recover() handler.
Workaround
This vulnerability can be mitigated by ensuring every content parameter in served OpenAPI specs declares a schema, supplying a custom ParamDecoder that guards against nil schemas, or running request validation inside a handler with an explicit recover().