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.
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Affected Vendors & Products
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History
Tue, 07 Apr 2026 00:00:00 +0000
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Mesop-dev
Mesop-dev mesop |
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Mesop-dev
Mesop-dev mesop |
Mon, 06 Apr 2026 16:45:00 +0000
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ssvc
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Fri, 03 Apr 2026 22:45:00 +0000
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| 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. | |
| Title | Mesop: Unbounded Thread Creation in WebSocket Handler Leads to Denial of Service | |
| Weaknesses | CWE-125 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-03T22:41:34.828Z
Updated: 2026-04-06T15:42:06.793Z
Reserved: 2026-03-30T20:52:53.283Z
Link: CVE-2026-34824
Updated: 2026-04-06T15:36:29.638Z
Status : Received
Published: 2026-04-03T23:17:05.213
Modified: 2026-04-06T16:16:37.543
Link: CVE-2026-34824
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