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CVE-2026-4963

huggingface smolagents Incomplete Fix CVE-2025-9959 local_python_executor.py evaluate_with code injection

Published: Mar 27, 2026Updated: Apr 30, 2026 Sources: CVE List NVDCWE-74
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
0.6%
Top 57.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

A weakness has been identified in huggingface smolagents 1.25.0.dev0. This affects the function evaluate_augassign/evaluate_call/evaluate_with of the file src/smolagents/local_python_executor.py of the component Incomplete Fix CVE-2025-9959. This manipulation causes code injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-74CWE-94

Affected Products

smolagentshuggingface
SaaS
AI / ML / ml-framework
huggingfacecommercialAI / MLaka transformers, huggingface/transformers, smolagents

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://vuldb.com/?id.353840
vuldb.com
https://vuldb.com/?ctiid.353840
vuldb.com
https://vuldb.com/?submit.777623
vuldb.com
and 4 more references View all →

Timeline

Published
Mar 27, 2026
Last Updated
Apr 30, 2026

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