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CVE-2026-100350— kin-openapi deepObject query decoding repeatedly compiles an invariant regular expression

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。从版本 0.145.0 到 0.146.0，在 方法中，针对每个查询键（query key）的循环内， 会对同一个参数名称的正则表达式重复调用 ，该循环用于解码 deepObject 类型的查询参数。未经身份验证的远程攻击者可以向受影响的端点发送包含大量无关查询键的请求，导致 为每个 deepObject 参数执行与攻击者控制的键数量成正比的工作量和内存分配。该正则表达式本身是固定的，因此不属于正则表达式拒绝服务（ReDoS）攻击；资源

CVSS 5.3 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
getkin kin-openapi >= 0.145.0, < 0.146.0 affected
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I. Basic Information for CVE-2026-100350

Vulnerability Information
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Vulnerability Title
kin-openapi deepObject query decoding repeatedly compiles an invariant regular expression
Source: CVE Program / CVE List V5
Vulnerability Description
kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.
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
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
getkin kin-openapi >= 0.145.0, < 0.146.0 -

II. Public POCs for CVE-2026-100350

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III. Intelligence Information for CVE-2026-100350

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Patches & Fixes for CVE-2026-100350 (1)

Vendor Advisories for CVE-2026-100350 (1)

Vendor Pages for CVE-2026-100350 (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-2026-100348 5.3 MEDIUM kin-openapi spec loader panics on a self-referential additionalProperties $ref (nil-pointe
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-400

V. Comments for CVE-2026-100350

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