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Python Software Foundation Expands CNA Scope to Include Pallets Projects

The Python Software Foundation has expanded its CNA scope to include the Pallets Projects, enabling faster, more reliable CVE tracking for critical frameworks used in Python applications.

Python Software Foundation Expands CNA Scope to Include Pallets Projects

Sarah Gooding

September 9, 2024


The Python Software Foundation is expanding its scope as a CVE Numbering Authority (CNA) to include the Pallets Projects, a collection of popular frameworks like Flask, Jinja, Click, and Quart.

PSF is a relatively newly minted CNA, having gained the authority to assign and manage CVE IDs and records for Python and pip in August 2023. The expanded scope brings the seven Pallets core libraries under the same umbrella for vulnerability records management:

(Note: This excludes distributions of Python, pip, and Pallets projects maintained by third-party distributors.)

Pallets was modeled after the success of the JazzBand organization, which distributes the responsibility of maintaining popular Django-related projects across a community of contributors. Pallets is a similar concept, albeit a separate community, that aims to create a sustainable group of maintainers and contributors.

Pallets Projects are central to thousands of Python web applications, and this move signals a strong commitment to improving the open source security landscape for developers. With frameworks like Flask and Jinja being widely adopted across industries, bringing them under the PSF's CNA umbrella ensures more consistent and transparent vulnerability reporting.

PSF identified a number of other benefits that projects receive by being part of their CNA scope:

  • Paid staffing for CNA operations rather than requiring volunteer time.
  • Quicker allocations of CVE IDs after a vulnerability is reported.
  • Involvement of each projects' security response teams during the reporting of vulnerabilities.
  • Richer published advisories and CVE Records including descriptions, metadata, and remediation information.
  • Consistent disclosures and publishing locations.

The inclusion of Pallets Projects means developers using these frameworks will have access to faster and more reliable CVE tracking. This move aligns with PSF’s broader goals of improving the vulnerability response processes of critical projects in the Python ecosystem.

As frameworks like Flask and Jinja are used in both small and large-scale applications, their vulnerability status directly impacts web security at scale. This is particularly important for organizations working with sensitive data or facing stringent security requirements, such as those in finance, healthcare, or government.

The success of this newly expanded CNA scope relies on PSF's ability to effectively manage CVE assignments through continued collaboration with project maintainers to ensure timely and accurate vulnerability reporting. This is a greater burden on the foundation but has the potential to significantly strengthen the security of critical Python libraries. It may also encourage other open source projects to follow suit in adopting standardized vulnerability reporting practices. In November 2023, the PSF published a guide that open source projects can follow, titled Becoming a CVE Numbering Authority.

The move reflects a growing recognition of the critical role that web frameworks play in modern application development and the need for streamlined, professional-grade security processes to support them. It addresses the often-overlooked challenge of maintaining security in popular open-source tools, which are frequently relied upon by enterprises and startups alike but may lack the resources for comprehensive security management.

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