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TI-2026-04324 Aliases CVE-2026-4963GHSA-54fq-v6x8-244g

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

Priority MEDIUM 57CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00586 48th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
huggingfacesmolagents1.25.0.dev0—No fix listedCNA
—smolagents (PyPI)up to 1.25.0.dev0—No fix listedGHSA-54fq-v6x8-244g
  • smolagents Vendorhuggingface Affected 1.25.0.dev0 Fixed in — No fix listed CNA
  • smolagents (PyPI) Vendor— Affected up to 1.25.0.dev0 Fixed in — No fix listed GHSA-54fq-v6x8-244g

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:huggingface:smolagents:1.25.0:dev0:*:*:*:*:*:*1.25.0 dev0Vulnerablehuggingface
  • cpe:2.3:a:huggingface:smolagents:1.25.0:dev0:*:*:*:*:*:* Versions 1.25.0 dev0 Vulnerable ·huggingface

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4963
  2. 2026-10-03 Alias added: GHSA-54fq-v6x8-244g
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 2

Advisory 1

Other 1

  • TI-2025-04589 Sandbox Escape Vulnerability in huggingface/smolagents CVSS 3.1CRITICAL 10.0
  • TI-2025-10859 XPath Injection in Hugging Face Smolagents search_item_ctrl_f Function CVSS 3.0MEDIUM 5.4
  • TI-2026-02266 huggingface smolagents LocalPythonExecutor requests.post server-side request forgery CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences