Vulnerability · Published Oct 23, 2026 · Assigned by VulnCheck

CVE-2026-57845Hugging Face Datasets through 5.1.0 Pickle Deserialization RCE via Pandas Builder

High 8.8

In plain English

A high-severity unsafe deserialization in datasets from huggingface. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 54.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

Hugging Face Datasets through 5.1.0 contains an insecure deserialization vulnerability that allows attackers to execute arbitrary Python code by crafting a malicious pickle file loaded through the deprecated pandas packaged builder. Attackers can supply a pickle-backed dataset that is processed by Pandas._generate_tables via pandas.read_pickle() without validation, so when a victim calls datasets.load_dataset("pandas", data_files=...), the embedded __reduce__ payload executes code with the victim process's privileges.

Affected products (as reported)

Vendor	Product	Versions
huggingface	datasets	0 – through 5.1.0

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Researcher Disclosure technical-description, exploit
Proposed Pull Request patch
VulnCheck Advisory: Hugging Face Datasets 5.1.0 Pickle Deserialization RCE via Pandas Builder third-party-advisory