CVE-2026-100353: CWE-476: NULL Pointer Dereference in getkin kin-openapi
Description
A NULL pointer dereference vulnerability exists in kin-openapi versions 0.136.0 through 0.148.0. This flaw allows an unauthenticated remote attacker to cause a deterministic nil-pointer panic by sending crafted requests with specific array query parameters or application/x-www-form-urlencoded bodies containing array properties in certain schema compositions. The issue is fixed in version 0.149.0.
CVSS v3.1
Score 7.5high
Affected software
getkin
kin-openapi
pkg:golang/github.com/getkin/kin-openapiRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
kin-openapi, a Go library for handling OpenAPI files, contains a NULL pointer dereference vulnerability (CWE-476) in versions from 0.136.0 up to but not including 0.149.0. The vulnerability arises because three openapi3filter decoder paths lack a nil-items guard for legal OpenAPI 3.1 array schemas. An unauthenticated remote client can trigger a nil-pointer panic by sending array query parameters, deepObject query parameters with array properties, or application/x-www-form-urlencoded request bodies with array properties inside allOf, anyOf, or oneOf subschemas. The affected code paths pass a nil items schema into code that dereferences it, causing the panic. This issue was addressed and fixed in version 0.149.0.
Potential Impact
An unauthenticated remote attacker can cause a denial-of-service condition by triggering a deterministic nil-pointer panic in the kin-openapi library. This results in application crashes or service interruptions. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Upgrade kin-openapi to version 0.149.0 or later, where this NULL pointer dereference vulnerability has been fixed. No other mitigation is required as the issue is resolved in the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-25T19:19:54.697Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad0fd062cdf04f65644a77c
Added to database: 10/15/2026, 16:19:18 UTC
Last enriched: 10/15/2026, 16:33:27 UTC
Last updated: 10/15/2026, 16:34:05 UTC
Views: 5
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