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I. Basic Information for CVE-2026-34824
Vulnerability Information

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Vulnerability Title
Mesop: Unbounded Thread Creation in WebSocket Handler Leads to Denial of Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mesop is a Python-based UI framework that allows users to build web applications. From version 1.2.3 to before version 1.2.5, an uncontrolled resource consumption vulnerability exists in the WebSocket implementation of the Mesop framework. An unauthenticated attacker can send a rapid succession of WebSocket messages, forcing the server to spawn an unbounded number of operating system threads. This leads to thread exhaustion and Out of Memory (OOM) errors, causing a complete Denial of Service (DoS) for any application built on the framework. This issue has been patched in version 1.2.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mesop 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mesop是Mesop开源的一个快速构建Python Web应用的UI框架。 Mesop 1.2.3至1.2.5之前版本存在安全漏洞,该漏洞源于WebSocket实现存在不受控制的资源消耗问题,可能导致未经身份验证的攻击者通过快速发送消息耗尽线程和内存,造成拒绝服务。
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
mesop-devmesop >= 1.2.3, < 1.2.5 -
II. Public POCs for CVE-2026-34824
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 9874 chars
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III. Intelligence Information for CVE-2026-34824
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IV. Related Vulnerabilities
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