Bug 2553592 (CVE-2026-100353) - CVE-2026-100353 github.com/getkin/kin-openapi: kin-openapi: Denial of Service via nil-pointer dereference in request decoding
Summary: CVE-2026-100353 github.com/getkin/kin-openapi: kin-openapi: Denial of Service...
Keywords:
Status: NEW
Alias: CVE-2026-100353
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-15 16:22 UTC by OSIDB Bzimport
Modified: 2026-10-16 21:34 UTC (History)
0 users

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Description OSIDB Bzimport 2026-10-15 16:22:57 UTC
kin-openapi is a Go project for handling OpenAPI files. From 0.136.0 until 0.149.0, three openapi3filter decoder paths that were missed by the fix for GHSA-p6wj-qrr4-pgh5 lack a nil-items guard for legal OpenAPI 3.1 array schemas. An unauthenticated remote client can trigger a deterministic nil-pointer panic through an array query parameter, a deepObject query parameter containing an array property, or an application/x-www-form-urlencoded request body whose array property appears inside an allOf, anyOf, or oneOf subschema. The query and composed-body paths reach urlValuesDecoder.parseArray, while the deepObject path reaches buildResObj, and all pass a nil items schema into code that dereferences it. This issue is fixed in version 0.149.0.


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