CVE-2025-5120
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA sandbox escape vulnerability was identified in huggingface/smolagents version 1.14.0, allowing attackers to bypass the restricted execution environment and achieve remote code execution (RCE). The vulnerability stems from the local_python_executor.py module, which inadequately restricts Python code execution despite employing static and dynamic checks. Attackers can exploit whitelisted modules and functions to execute arbitrary code, compromising the host system. This flaw undermines the core security boundary intended to isolate untrusted code, posing risks such as unauthorized code execution, data leakage, and potential integration-level compromise. The issue is resolved in version 1.17.0.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA sandbox escape vulnerability in huggingface/smolagents version 1.14.0 allows attackers to bypass the restricted execution environment in local_python_executor.py and achieve remote code execution. The module uses static and dynamic checks but inadequately restricts whitelisted modules and functions, enabling arbitrary code execution and compromising the host system.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 1.14.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed smolagents versionRun pip show smolagents or pip list | grep smolagents to check the installed version numberAffected if The installed version is exactly 1.14.0
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Locate local_python_executor moduleFind the local_python_executor.py file in the smolagents installation directory, typically in the agent namespaceAffected if The local_python_executor.py file exists in the smolagents package and is being used by your agent configuration
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Verify sandbox configurationInspect the code that configures the local_python_executor, looking for any whitelist definitions of modules or functions that could be exploitedAffected if The executor has permissive module/function whitelists that could allow import or execution of dangerous modules like os, sys, or subprocess
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Check for code execution logsReview application logs for any unexpected code execution patterns through the python executor, particularly attempts to access restricted modulesAffected if There are logs showing execution of code that bypasses the intended sandbox restrictions
You are affected if smolagents version 1.14.0 is installed and the local_python_executor module is in use, as the sandbox can be escaped to achieve arbitrary code execution.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedUpgrade to version 1.17.0 which resolves the vulnerability by implementing proper restrictions on the whitelisted modules and functions in the local_python_executor.py module.
smolagents >= 1.17.0
- Upgrade smolagents from version 1.14.0 to version 1.17.0 or later using pip: pip install --upgrade smolagents
- Verify the upgrade was successful by checking the installed version: pip show smolagents
- Ensure any dependent projects or environments using smolagents are restarted to load the new version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-5120 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-5120 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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