Vulnerability in Getkin Kin-Openapi
CVE-2026-100352
kin-openapi is a Go project for handling OpenAPI files. Prior to 0.148.0, the OpenAPI 3.1 validation path passes YAML NaN and infinity numeric values to santhosh-tekuri/jsonschema v6.0.2 without applying kin-openapi's existing finite-number guards. A remote unauthenticated client can send an application/yaml or application/x-yaml request body containing .nan, .inf, or -.inf to an operation with a numeric constraint, causing the dependency to create and dereference a nil big.Rat during ValidateRequest. Standard net/http servers recover the panic per connection, while other hosts or application goroutines may terminate the process. This issue is fixed in version 0.148.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Getkin Kin-Openapi — versions < 0.148.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-100352?
- CVE-2026-100352 is a high-severity vulnerability in Getkin Kin-Openapi, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2026-10-15.
- How severe is CVE-2026-100352?
- High severity. CVSS v3 base score is 7.5 out of 10.