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I. Basic Information for CVE-2026-33331
Vulnerability Information

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Vulnerability Title
oRPC: Stored XSS in OpenAPI Reference Plugin via unescaped JSON.stringify
Source: NVD (National Vulnerability Database)
Vulnerability Description
oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.9, a stored cross-site scripting (XSS) vulnerability exists in the OpenAPI documentation generation of orpc. If an attacker can control any field within the OpenAPI specification (such as info.description), they can break out of the JSON context and execute arbitrary JavaScript when a user views the generated API documentation. This issue has been patched in version 1.13.9.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
orpc 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
orpc是middleapi开源的一个RPC与OpenAPI集成框架。 orpc 1.13.9之前版本存在跨站脚本漏洞,该漏洞源于OpenAPI文档生成存在存储型跨站脚本,可能导致攻击者在用户查看生成的API文档时执行任意JavaScript。
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
VendorProductAffected VersionsCPESubscribe
middleapiorpc < 1.13.9 -
II. Public POCs for CVE-2026-33331
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III. Intelligence Information for CVE-2026-33331
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