---
id: CVE-2025-70560
aliases:
  - GHSA-fjm6-8xp2-4fwc
  - PYSEC-2026-1224
title: >-
  Boltz contains an insecure deserialization vulnerability in its molecule
  loading functionality
summary: >-
  Boltz contains an insecure deserialization vulnerability in its molecule
  loading functionality
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: boltz
product: boltz
ecosystem: pip
affected:
  - boltz <= 2.0.0
published: '2026-02-03'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-fjm6-8xp2-4fwc'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-70560'
  - url: 'https://github.com/jwohlwend/boltz/issues/600'
  - url: 'https://github.com/jwohlwend/boltz'
  - url: >-
      https://github.com/jwohlwend/boltz/blob/cb04aeccdd480fd4db707f0bbafde538397fa2ac/src/boltz/data/mol.py#L80
tags:
  - osv
  - pip
epss: 0.00151
epssPercentile: 0.03586
ingestedAt: '2026-07-08T18:25:48.928Z'
---

## Overview

Boltz 2.0.0 contains an insecure deserialization vulnerability in its molecule loading functionality. The application uses Python pickle to deserialize molecule data files without validation. An attacker with the ability to place a malicious pickle file in a directory processed by boltz can achieve arbitrary code execution when the file is loaded.

## Affected packages

- `boltz <= 2.0.0`

## Remediation

Refer to the advisory for the patched release.