Boltz contains an insecure deserialization vulnerability in its molecule loading functionality
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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | boltz | <= 2.0.0 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-70560
- https://github.com/jwohlwend/boltz/issues/600
- https://github.com/jwohlwend/boltz
- https://github.com/jwohlwend/boltz/blob/cb04aeccdd480fd4db707f0bbafde538397fa2ac/src/boltz/data/mol.py#L80
- https://pypi.org/project/boltz
- https://github.com/advisories/GHSA-fjm6-8xp2-4fwc
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-502- Platform
- Python (PyPI)
- Package
boltz- Disclosed
- 03.02.2026
- Updated
- 11.10.2026 13:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1224 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-fjm6-8xp2-4fwc - CC BY 4.0
Vulnerability history: boltz
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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