filelock-lts 2026.22701

LTS Security release for filelock (CVE-2025-68146 & CVE-2026-22701 Patch) - Meta-package

Filelock LTS: The CVE-Aware Ecosystem 🛡️

⚠️ Disclaimer: This project is not affiliated with, endorsed by, or associated with the official filelock maintainers. All patches and releases are independently maintained and provided on a best-effort basis to support legacy environments.

A unified security ecosystem ensuring filelock safety across ALL Python versions (3.7 - 3.14).

🚨 The Vulnerabilities: CVE-2025-68146 & CVE-2026-22701

A critical Time-of-Check-Time-of-Use (TOCTOU) race condition allows local attackers to truncate or corrupt sensitive files via symlink or junction attacks.

🛡️ The Solution

This repository acts as a smart dispatcher. Installing filelock-lts automatically delivers the correct security strategy for your Python runtime:

Python Version	Strategy	Base Version	Status
3.7	Custom Backport	3.12.2	🛡️ SECURED (Unix + Win32)
3.8	Custom Backport	3.16.1	🛡️ SECURED (Unix + Win32)
3.9	Custom Backport	3.19.1	🛡️ SECURED (Unix + Win32)
3.10+	Upstream Proxy	Official >= 3.20.1	✅ REDIRECTED

📦 Installation

Standard Installation (Recommended):

pip install filelock-lts

This automatically selects the correct package for your environment.

Specific Version Targeting:

pip install filelock-lts-py38  # For Python 3.8 specifically

🔮 The Future: Proactive Dependency Security

The Filelock LTS ecosystem is evolving to provide earlier visibility and stronger controls around dependency risk:

• Early Warning Releases: Placeholder LTS releases may be published when a potential upstream security issue is under investigation, allowing users to prepare before official advisories are issued.
• Runtime Policy Enforcement (Optional): An opt-in runtime module that detects vulnerable dependency versions at runtime and enforces user-configured policies (warn, block, or isolate).
• Configurable Security Policies: Teams can choose how unpatched dependencies are handled based on their risk tolerance and operational needs.

🏗️ Architecture

• lts-dispatcher: The metadata dispatcher (this branch).
• lts-py3.X: Isolated branches containing specific source code or dependency definitions for that Python version.

🤝 License

Unlicense (Public Domain). Security belongs to everyone.