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CVE-2026-100354— kin-openapi: Uncontrolled Recursion on Circular allOf/anyOf/oneOf Schemas Causes Fatal Process Crash

Quick assessment

Affected
getkin kin-openapi
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

kin-openapi 是一个用于处理 OpenAPI 文件的 Go 语言项目。在版本 0.149.0 之前，当使用 allOf、anyOf 或 oneOf 链式引用指向祖先 schema 时，运行时请求、响应以及直接的 schema 验证缺乏循环检测机制，尽管文档加载和文档验证功能本身已能接受循环引用。一旦请求或响应数据触及受影响的 schema，便会在 Schema.visitJSON 或 openapi3filter.decodeValue 中引发无限递归，从而导致 Go 运行时 goroutine 栈耗尽。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
getkin kin-openapi < 0.149.0 affected
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I. Basic Information for CVE-2026-100354

Vulnerability Information
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Vulnerability Title
kin-openapi: Uncontrolled Recursion on Circular allOf/anyOf/oneOf Schemas Causes Fatal Process Crash
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
getkin kin-openapi < 0.149.0 -

II. Public POCs for CVE-2026-100354

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III. Intelligence Information for CVE-2026-100354

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Patches & Fixes for CVE-2026-100354 (1)

Vendor Advisories for CVE-2026-100354 (1)

Vendor Pages for CVE-2026-100354 (1)

Same Patch Batch · getkin · 2026-10-15 · 9 CVEs total

CVE-2026-100349 8.2 HIGH kin-openapi openapi3filter: nil-pointer panic in ValidateResponse on a response header dec
CVE-2026-97394 7.5 HIGH kin-openapi: Nil-pointer dereference panic in openapi3filter for OpenAPI 3.1 array schemas
CVE-2026-100352 7.5 HIGH kin-openapi: YAML NaN/Inf Values Bypass Built-in Guards and Panic via OAS 3.1 Validation P
CVE-2026-100353 7.5 HIGH kin-openapi: Incomplete Fix for GHSA-p6wj-qrr4-pgh5: Three Unpatched nil-Items Panic Paths
CVE-2026-100351 7.4 HIGH kin-openapi: ValidationHandler security-requirement bypass via encoded-path operation conf
CVE-2026-100348 5.3 MEDIUM kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointe
CVE-2026-100350 5.3 MEDIUM kin-openapi deepObject query decoding repeatedly compiles an invariant regular expression
CVE-2026-100347 5.3 MEDIUM kin-openapi: Unauthenticated panic (DoS) in openapi3filter legacy router via non-canonical

IV. Related Vulnerabilities

Same product: kin-openapi
Same vendor: getkin
Same weakness: CWE-674

V. Comments for CVE-2026-100354

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