CVE-2026-97394: CWE-248: Uncaught Exception in getkin kin-openapi
Description
kin-openapi versions from 0.136.0 up to but not including 0.143.0 contain a vulnerability where the openapi3filter component accepts OpenAPI 3.1 array schemas without the required items keyword. This leads to a nil-pointer panic during request or response validation when handling certain content types. The issue is fixed in version 0.143.0.
CVSS v3.1
Score 7.5high
Affected software
getkin
kin-openapi
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The kin-openapi Go project, specifically versions >=0.136.0 and <0.143.0, has a vulnerability in the openapi3filter module. It improperly accepts OpenAPI 3.1 array schemas missing the items keyword and then dereferences a nil Schema.Items pointer during decoding of application/x-www-form-urlencoded or multipart/form-data request bodies, response headers, and other array parameter surfaces. This causes a nil-pointer panic during ValidateRequest or ValidateResponse calls. OpenAPI 3.0 documents are not affected because they reject arrays without items, and JSON request bodies use a different decoding path. The vulnerability is resolved in version 0.143.0.
Potential Impact
A remote unauthenticated attacker can trigger a denial of service by causing the application to panic due to a nil-pointer dereference. This results in an availability impact but does not affect confidentiality or integrity.
Mitigation Recommendations
Upgrade kin-openapi to version 0.143.0 or later, where this issue is fixed. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-24T14:16:20.202Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad0f6002cdf04f65641fe1d
Added to database: 10/15/2026, 15:49:20 UTC
Last enriched: 10/15/2026, 16:03:14 UTC
Last updated: 10/15/2026, 16:08:12 UTC
Views: 5
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