CVE-2026-34824

7.5 HIGH
Published: April 03, 2026 Modified: April 13, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/mesop-dev/mesop/releases/tag/v1.2.5
Source: security-advisories@github.com
Product Release Notes
https://github.com/mesop-dev/mesop/security/advisories/GHSA-3jr7-6hqp-x679
Source: security-advisories@github.com
Exploit Mitigation Vendor Advisory
https://github.com/mesop-dev/mesop/security/advisories/GHSA-3jr7-6hqp-x679
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Mitigation Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.0%
15th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

mesop-dev