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CVE-2026-33057 is an unrestricted remote code execution vulnerability in Mesop, a Python-based UI framework for building web applications. It affects Mesop 1.2.2 and earlier. The flaw is in the AI testing/debug infrastructure, specifically a lightweight Flask server in ai/sandbox/wsgi_app.py that exposes the /exec-py route. That endpoint accepts base64-encoded Python source via the code POST parameter, writes the supplied content to disk, and executes it through execute_module(module_path...). Because the endpoint ingests and evaluates untrusted Python code without authentication or other access controls, any reachable attacker can cause arbitrary Python code to run on the host system.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
An unauthenticated remote code execution vulnerability in Mesop versions 1.2.2 and below, caused by a web endpoint in the ai/testing infrastructure that accepts and executes untrusted Python code.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.