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CVE-2026-47769— APIFold Vulnerable to Unauthenticated Webhook Event Injection

Quick assessment

Affected
Work90210 APIFold
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.

Work90210 APIFold是Work90210个人开发者开源的一款API配置管理支撑系统。 Work90210 APIFold存在授权问题漏洞，该漏洞源于对/webhooks/:serverSlug/:eventName端点未进行签名检查或身份验证要求，允许未经身份验证的攻击者注入任意JSON有效载荷。

CVSS 5.3 · Medium EPSS 0.47% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
Work90210 APIFold < 7f19b52280f414f57af2b79a95333d1c8fbeece5 affected
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I. Basic Information for CVE-2026-47769

Vulnerability Information
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Vulnerability Title
APIFold Vulnerable to Unauthenticated Webhook Event Injection
Source: CVE Program / CVE List V5
Vulnerability Description
APIFold reads an OpenAPI 3.x or Swagger 2.x specification and generates a live, production-ready MCP server endpoint. Prior to commit 7f19b52280f414f57af2b79a95333d1c8fbeece5, the `/webhooks/:serverSlug/:eventName` endpoint accepts arbitrary unauthenticated JSON and stores it in Redis and the `webhook_events` PostgreSQL table without any signature check or authentication requirement. The root cause is that `createWebhookRouter` is called at `server.ts:188` without a `validators` map, so `receivers.ts:80`'s optional-chaining guard evaluates to `undefined` and the signature-validation block (`receiver.ts:81–95`) is unconditionally skipped. Any unauthenticated network client that knows a valid server slug can inject arbitrary payloads, which are subsequently served as trusted resource state to legitimate MCP clients. Commit 7f19b52280f414f57af2b79a95333d1c8fbeece5 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Work90210 APIFold 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Work90210 APIFold是Work90210个人开发者开源的一款API配置管理支撑系统。 Work90210 APIFold存在授权问题漏洞，该漏洞源于对/webhooks/:serverSlug/:eventName端点未进行签名检查或身份验证要求，允许未经身份验证的攻击者注入任意JSON有效载荷。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Work90210 APIFold < 7f19b52280f414f57af2b79a95333d1c8fbeece5 -

II. Public POCs for CVE-2026-47769

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III. Intelligence Information for CVE-2026-47769

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Patches & Fixes for CVE-2026-47769 (1)

Vendor Advisories for CVE-2026-47769 (1)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2026-47769

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