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CVE-2025-30358

CVE-2025-30358 · Mesop Class Pollution vulnerability leads to DoS and Jailbreak attacks

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Mesop is a Python-based UI framework that allows users to build web applications. A class pollution vulnerability in Mesop prior to version 0.14.1 allows attackers to overwrite global variables and class attributes in certain Mesop modules during runtime. This vulnerability could directly lead to a denial of service (DoS) attack against the server. Additionally, it could also result in other severe consequences given the application's implementation, such as identity confusion, where an attacker could impersonate an assistant or system role within conversations. This impersonation could potentially enable jailbreak attacks when interacting with large language models (LLMs). Just like the Javascript's prototype pollution, this vulnerability could leave a way for attackers to manipulate the intended data-flow or control-flow of the application at runtime and lead to severe consequences like remote code execution when gadgets are available. Users should upgrade to version 0.14.1 to obtain a fix for the issue.

CVSS 8.1 · High · EPSS 0.7% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • mesop

    Versions
    • < 0.14.1: Affected

    No fix published

  • mesop PyPI

    Versions
    • 0.0.1
    • 0.10.0
    • 0.10.0rc0
    • 0.10.0rc1
    • 0.10.0rc2
    • 0.11.0
    • 0.11.0rc0
    • 0.11.1
    • 0.12.0
    • 0.12.0rc0
    • 0.12.1
    • 0.12.10b1
    • 0.12.10b2
    • 0.12.10b3
    • 0.12.10rc1
    • 0.12.1rc0
    • 0.12.2
    • 0.12.3
    • 0.12.3rc0
    • 0.12.4
    • 0.12.4rc0
    • 0.12.5
    • 0.12.5b1
    • 0.12.5rc1
    • 0.12.6
    • 0.12.6rc1
    • 0.12.7
    • 0.12.7b1
    • 0.12.7rc1
    • 0.12.8
    • 0.12.8b1
    • 0.12.8rc1
    • 0.12.9
    • 0.12.9rc1
    • 0.13.0
    • 0.13.0rc1
    • 0.14.0
    • 0.14.1rc1
    • 0.14rc1
    • 0.3.1
    • 0.3.2
    • 0.3.3
    • 0.3.4
    • 0.4.0
    • 0.4.1
    • 0.4.2
    • 0.5.0
    • 0.5.1
    • 0.5.2
    • 0.5.3
    • 0.5.4
    • 0.5.5
    • 0.5.6
    • 0.6.0
    • 0.7.0
    • 0.7.1
    • 0.7.2
    • 0.8.0
    • 0.8.0rc0
    • 0.9.0
    • 0.9.0rc1
    • 0.9.1
    • 0.9.1rc1
    • 0.9.2
    • 0.9.2rc1
    • 0.9.3
    • 0.9.3rc0
    • 0.9.4
    • 0.9.4rc0
    • 0.9.5
    • 0.9.5rc0
    Affected ranges
    • ECOSYSTEM: < 0.14.1

    Update to 0.14.1

Original sources

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