Vulnerability Description
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 Unrestricted Remote Code Execution. Any individual capable of routing HTTP logic to this server block will gain explicit host-machine command rights. The AI codebase package includes a lightweight debugging Flask server inside ai/sandbox/wsgi_app.py. The /exec-py route accepts base_64 encoded raw string payloads inside the code parameter natively evaluated by a basic POST web request. It saves it rapidly to the operating system logic path and injects it recursively using execute_module(module_path...). This issue has been fixed in version 1.2.3.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mesop-Dev | Mesop | < 1.2.3 |
Related Weaknesses (CWE)
References
- https://github.com/mesop-dev/mesop/commit/825f55970c20686de3f28e2c66df4d74e9d4dbPatch
- https://github.com/mesop-dev/mesop/security/advisories/GHSA-gjgx-rvqr-6w6vVendor Advisory
FAQ
What is CVE-2026-33057?
CVE-2026-33057 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 un...
How severe is CVE-2026-33057?
CVE-2026-33057 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-33057?
Check the references section above for vendor advisories and patch information. Affected products include: Mesop-Dev Mesop.