CVE-2025-14931: PYSEC-2026-543 - Hugging Face smolagents: Unsafe deserialization in Remote Python Executor leads to RCE

CVE-2025-14931 · Severity: critical · CVSS 10 · Published 2025-12-23

Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hugging Face smolagents. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of pickle data. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-28312.

Technologies: smolagents (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-14931 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-14931 being exploited in the wild.
How severe is CVE-2025-14931?
Critical severity, with a CVSS score of 10, published 23 December 2025.
Which products and versions are affected?
smolagents (PyPI) ECOSYSTEM:introduced=0,last_affected=1.23.0.
Is there a fix for CVE-2025-14931?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-14931?
Check whether you run smolagents (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • smolagents (PyPI) ECOSYSTEM:introduced=0,last_affected=1.23.0

Identifiers

  • CVE-2025-14931
  • GHSA-q9r5-6hrr-9ph7
  • PYSEC-2026-543

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