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CVE-2026-100348— kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointer DoS)

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 项目。在 0.145.0 版本之前，openapi3.Loader 在解析自我引用的 additionalProperties JSON 引用（例如，指向自身 additionalProperties 成员的模式）时，可能会解引用 nil 的 SchemaRef.Value。通过 LoadFromData、LoadFromFile 或 LoadFromURI 加载攻击者控制的 OpenAPI 文档会在文档验证之前先调用 resolveCompon

CVSS 5.3 · Medium EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
getkin kin-openapi < 0.145.0 affected
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I. Basic Information for CVE-2026-100348

Vulnerability Information
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Vulnerability Title
kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointer DoS)
Source: CVE Program / CVE List V5
Vulnerability Description
kin-openapi is a Go project for handling OpenAPI files. Prior to 0.145.0, openapi3.Loader can dereference a nil SchemaRef.Value while resolving a self-referential additionalProperties JSON Reference such as a schema that points to its own additionalProperties member. Loading an attacker-controlled OpenAPI document through LoadFromData, LoadFromFile, or LoadFromURI reaches resolveComponent before document validation and can panic the loading process. Resolved additionalProperties schemas and ordinary recursive schemas do not take the vulnerable nil-value path. This issue is fixed in version 0.145.0.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
getkin kin-openapi < 0.145.0 -

II. Public POCs for CVE-2026-100348

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III. Intelligence Information for CVE-2026-100348

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Patches & Fixes for CVE-2026-100348 (1)

Vendor Advisories for CVE-2026-100348 (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-2026-100354 7.5 HIGH kin-openapi: Uncontrolled Recursion on Circular allOf/anyOf/oneOf Schemas Causes Fatal Pro
CVE-2026-100351 7.4 HIGH kin-openapi: ValidationHandler security-requirement bypass via encoded-path operation conf
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-476

V. Comments for CVE-2026-100348

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