Mesop: Unbounded Thread Creation in WebSocket Handler Leads to Denial of Service

Summary 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 threa...

PT-2026-30269

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 o...

CVE-2026-34824: Out-of-bounds Read

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 o...

Mesop 安全漏洞

Mesop is a fast-building Python web application UI framework developed by Mesop OpenSource. Versions of Mesop from 1.2.3 to 1.2.5 contained security vulnerabilities. These vulnerabilities were due to uncontrolled resource consumption issues in the WebSocket implementation. This could allow...

CVE-2026-33054

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted statetoken through the UI stream payload to arbitrarily target files on the disk under the standard...

CVE-2026-33057

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

CVE-2026-33057

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

CVE-2026-33057

The Mesop Python-based UI framework (versions 1.2.2 and below ) is vulnerable to Unrestricted Remote Code Execution (RCE) . The flaw exists in the ai/ testing module infrastructure, where a lightweight debugging Flask server located at ai/sandbox/wsgi_app.py lacks authentication. The /exec-py rou...

CVE-2026-33057 Mesop Affected by Unauthenticated Remote Code Execution via Test Suite Route /exec-py

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

CVE-2026-33057 Mesop Affected by Unauthenticated Remote Code Execution via Test Suite Route /exec-py

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

CVE-2026-33057 Mesop Affected by Unauthenticated Remote Code Execution via Test Suite Route /exec-py

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

CVE-2026-33057

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

CVE-2026-33054

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted statetoken through the UI stream payload to arbitrarily target files on the disk under the standard...

CVE-2026-33054

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted statetoken through the UI stream payload to arbitrarily target files on the disk under the standard...

CVE-2026-33054 Mesop: Path Traversal utilizing `FileStateSessionBackend` leads to Application Denial of Service and File Write/Deletion

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted statetoken through the UI stream payload to arbitrarily target files on the disk under the standard...

CVE-2026-33054 Mesop: Path Traversal utilizing `FileStateSessionBackend` leads to Application Denial of Service and File Write/Deletion

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted statetoken through the UI stream payload to arbitrarily target files on the disk under the standard...

CVE-2026-33054

CVE-2026-33054 affects the Mesop Python UI framework (versions ≤ 1.2.2) and enables a Path Traversal via the UI stream payload when FileStateSessionBackend is used. An untrusted state_token can target arbitrary files on disk, causing denial of service (crash loops) or unauthorized file writes/del...

CVE-2026-33054 Mesop: Path Traversal utilizing `FileStateSessionBackend` leads to Application Denial of Service and File Write/Deletion

Mesop is a Python-based UI framework that allows users to build web applications. Versions 1.2.2 and below contain a Path Traversal vulnerability that allows any user supplying an untrusted statetoken through the UI stream payload to arbitrarily target files on the disk under the standard...

CVE-2026-33057: Improper Control of Generation of Code

Mesop is a Python-based UI framework that allows users to build web applications. In versions 1.2.2 and below, an explicit web endpoint inside the ai/ testing module infrastructure directly ingests untrusted Python code strings unconditionally without authentication measures, yielding standard...

Mesop 代码注入漏洞

Mesop is an open-source UI framework for quickly building Python web applications. Versions of Mesop 1.2.2 and earlier contained a code injection vulnerability. This vulnerability stemmed from the /exec-py endpoint in the ai/test module, which executed unvalidated Python code without any...