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7.6HIGH

CVE-2025-9959 — Incomplete validation of dunder attributes allows an attacker to escape from the Local Python execution…

Unknown · Unknown · Published 3 Sept 2025 · Modified 26 Sept 2026

Description

Incomplete validation of dunder attributes allows an attacker to escape from the Local Python execution environment sandbox, enforced by smolagents. The attack requires a Prompt Injection in order to trick the agent to create malicious code.

References

What to do
  1. Check whether Unknown is in your asset inventory.
  2. Patch in the next maintenance window; prioritise internet-facing systems.
  3. Record the decision in your risk register for audit evidence.
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Link: adminadda.com/cve/CVE-2025-9959