## Python-Multipart v0.0.22 Patches Critical Path Traversal Vulnerability (CVE-2026-24486)
A critical path traversal vulnerability in the widely-used `python-multipart` library has been patched, exposing projects to potential arbitrary file writes on the server filesystem. The flaw, tracked as CVE-2026-24486, is triggered under a specific but dangerous configuration. When the library's `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True` options are set, an attacker can craft a malicious filename to bypass directory restrictions and write uploaded files to unintended, sensitive locations.

The vulnerability was disclosed via a GitHub security advisory for the library maintained by developer Kludex. The automated dependency update, managed by RenovateBot, shows the patch moving projects from version 0.0.20 directly to 0.0.22. This highlights the silent, automated nature of modern software supply chain security, where critical fixes can be applied without direct developer intervention, but also underscores the risk if such updates are ignored or delayed.

The impact is confined to applications using the non-default configuration mentioned, but for those affected, the consequences could be severe, enabling server compromise. The swift autoclosure of the related pull request in many repositories indicates an efficient patch rollout, yet it serves as a stark reminder of the hidden attack surfaces within common dependencies. This incident reinforces the necessity of monitoring automated security updates and understanding the specific conditions that activate such vulnerabilities.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: cybersecurity, vulnerability, software-supply-chain, python, CVE
- **Credibility**: unverified
- **Published**: 2026-03-27 04:27:07
- **ID**: 36768
- **URL**: https://whisperx.ai/en/intel/36768