CVE-2026-4963

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 4.0

2.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-26)

CWEs

CWE-74, CWE-94

Published

2026-03-27

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• huggingface:smolagents

Packages (OSV)

References

• https://gist.github.com/YLChen-007/35b7d46e892266a0ed6dbe57802858be
• https://gist.github.com/YLChen-007/7146f45960f79bc1e2976fed526e0a9b
• https://vuldb.com/?ctiid.353840
• https://vuldb.com/?id.353840
• https://vuldb.com/?submit.777623

Check your stackJSON