---
title: "CVE-2026-31237: Ludwig framework is vulnerable to insecure deserialization through its predict() method."
url: https://erroneo.us/security/cve/CVE-2026-31237/
description: "CVE-2026-31237 (ludwig (PyPI)): The Ludwig framework thru 0.10.4 is vulnerable to insecure deserialization (CWE-502) through its predict() method. When a…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-12
date_modified: 2026-05-27
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-31237"
kev: false
cvss: 9.8
epss: 0.00875
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-31237: Ludwig framework is vulnerable to insecure deserialization through its predict() method.

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.9% , percentile 59: FIRST’s model estimates a 0.9% chance of exploitation activity in the next 30 days, higher than 59% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes ludwig (PyPI) <= 0.10.4, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

The Ludwig framework thru 0.10.4 is vulnerable to insecure deserialization (CWE-502) through its predict() method. When a user provides a dataset file path to the predict() method, the framework automatically determines the file format. If the file is a pickle (.pkl) file, it is loaded using pandas.readpickle() without any validation or security restrictions. This allows the deserialization of arbitrary Python objects via the unsafe pickle module. A remote attacker can exploit this by providing a maliciously crafted pickle file, leading to arbitrary code execution on the system running the Ludwig prediction.

## Affected packages

- PyPI `ludwig` <= 0.10.4 → fixed: none listed

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.88% probability of exploitation activity in the next 30 days; percentile 59.

## Sources

- [GitHub Advisory GHSA-wcr3-gm9f-f87q](https://github.com/advisories/GHSA-wcr3-gm9f-f87q)
- [CVE.org record CVE-2026-31237](https://www.cve.org/CVERecord?id=CVE-2026-31237)
- [NVD entry CVE-2026-31237](https://nvd.nist.gov/vuln/detail/CVE-2026-31237)
- [github.com](https://github.com/ludwig-ai/ludwig)
- [notion.so](https://www.notion.so/CVE-2026-31237-35d1e139318881fb95a2ee7c5d0e17d8)

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Source page: https://erroneo.us/security/cve/CVE-2026-31237/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt