PYSEC-2026-1639
mlflow Creates of Temporary File in Directory with Insecure Permissions
At a glance
- Published
- Updated
- CVE
- CVE-2025-10279
- Aliases
- BIT-mlflow-2025-10279, GHSA-4x5p-f36r-mxxr
- CVSS_V3
- CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In mlflow version 2.20.3, the temporary directory used for creating Python virtual environments is assigned insecure world-writable permissions (0o777). This vulnerability allows an attacker with write access to the `/tmp` directory to exploit a race condition and overwrite `.py` files in the virtual environment, leading to arbitrary code execution. The issue is resolved in version 3.4.0.
Affected packages
| Package | Versions |
|---|---|
| PyPI · mlflow | introduced 0, fixed 3.4.0rc0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-10279 ADVISORY
- https://github.com/mlflow/mlflow/commit/1d7c8d4cf0a67d407499a8a4ffac387ea4f8194a WEB
- https://github.com/mlflow/mlflow PACKAGE
- https://huntr.com/bounties/01d3b81e-13d1-43aa-b91a-443aec68bdc8 WEB
- https://pypi.org/project/mlflow PACKAGE
- https://github.com/advisories/GHSA-4x5p-f36r-mxxr ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |