# CVE-2026-57845: Hugging Face Datasets < 5.2.0 Pickle Deserialization RCE via Pandas Builder

Status: published. Published: 2026-10-23. Updated: 2026-11-12.

Hugging Face Datasets before 5.2.0 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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/huggingface/datasets/pull/8879

## Affected products and versions

- huggingface / datasets (huggingface/datasets): ≥ 0; ≤ 5.1.0 (affected, semver); 5.2.0 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.55% as of 2026-11-12; percentile 46.36%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-502

## Exploit evidence

- exploit: https://github.com/SaiTeja-Erukude/CVE-2026-57845-hf-datasets-rce (CNA: VulnCheck)

## References

- https://github.com/SaiTeja-Erukude/CVE-2026-57845-hf-datasets-rce (CNA: VulnCheck; technical-description, exploit)

- https://github.com/huggingface/datasets/releases/tag/5.2.0 (CNA: VulnCheck; release-notes)

- https://github.com/huggingface/datasets/pull/8879 (CNA: VulnCheck; patch, issue-tracking)

- https://www.vulncheck.com/advisories/hugging-face-datasets-pickle-deserialization-rce-via-pandas-builder (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-57845; retrieved 2026-11-12; source updated 2026-11-12

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-57845; retrieved 2026-11-12; source updated Not reported

Revision: 1115d659631c7e1ae3a66d595d62e8b6e7cd4382291a43bd6b7b7e3fb92c3546

Canonical: https://y2.dev/cve/CVE-2026-57845

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