Vulnerability DatabaseCVE-2025-9959
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CVE-2025-9959
September 03, 2025
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.
Affected Packages
https://github.com/huggingface/smolagents.git (GITHUB):
Affected version(s)
Fix Suggestion:
Update to version v1.21.0
smolagents (PYTHON):
Affected version(s) >=0.1.0 <1.21.0
Fix Suggestion:
Update to version 1.21.0
Related Resources (2)
https://research.jfrog.com/vulnerabilities/smolagents-local-python-sandbox-escape-jfsa-2025-001434277/
https://github.com/huggingface/smolagents/pull/1551
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CVSS v4
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Improper Control of Generation of Code ('Code Injection')
CWE-94
EPSS
Base Score:
0.04