# CVE-2026-4963: huggingface smolagents Incomplete Fix CVE-2025-9959 local_python_executor.py evaluate_with code injection

> CVE-2026-4963: huggingface smolagents Incomplete Fix CVE-2025-9959 local_python_executor.py evaluate_with code injection. CVSS 6.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-4963
Last updated: 2026-06-17T10:57:30Z

- Published: 2026-03-27 17:05 UTC · Updated: 2026-06-17 10:57 UTC · Assigner: VulDB
- CVSS: 6.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
- EPSS: 0.59%, 48th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-74, CWE-94

## 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.

## Affected vendors and products

- huggingface: smolagents

## Tracked companies

- [Hugging Face](https://rewindex.com/company/hugging-face.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-4963)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-4963)
- [https://gist.github.com/YLChen-007/35b7d46e892266a0ed6dbe57802858be](https://gist.github.com/YLChen-007/35b7d46e892266a0ed6dbe57802858be)
- [https://gist.github.com/YLChen-007/7146f45960f79bc1e2976fed526e0a9b](https://gist.github.com/YLChen-007/7146f45960f79bc1e2976fed526e0a9b)
- [https://vuldb.com/?ctiid.353840](https://vuldb.com/?ctiid.353840)
- [https://vuldb.com/?id.353840](https://vuldb.com/?id.353840)
- [https://vuldb.com/?submit.777623](https://vuldb.com/?submit.777623)
- [https://vuldb.com/?submit.777643](https://vuldb.com/?submit.777643)
- [https://vuldb.com/?submit.777644](https://vuldb.com/?submit.777644)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-4963 · Markdown: https://rewindex.com/cve/CVE-2026-4963.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-4963 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:20.967Z