Vulnerability in Getkin Kin-Openapi
CVE-2026-100354
kin-openapi is a Go project for handling OpenAPI files. Prior to 0.149.0, runtime request, response, and direct schema validation lacks cycle detection when an allOf, anyOf, or oneOf chain refers back to an ancestor schema, even though loading and document validation accept the circular reference. A request or response that reaches the affected schema causes unbounded recursion in Schema.visitJSON or openapi3filter.decodeValue and exhausts the Go goroutine stack. The resulting fatal stack overflow cannot be caught with recover and terminates the entire process, including unrelated requests. This issue is fixed in version 0.149.0.
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 < 0.149.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-100354?
- CVE-2026-100354 is a high-severity vulnerability in Getkin Kin-Openapi, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-10-15.
- How severe is CVE-2026-100354?
- High severity. CVSS v3 base score is 7.5 out of 10.