[Snyk] Security upgrade pillow from 9.5.0 to 12.3.0

[deargvp1]

Snyk has created this PR to fix 4 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• appengine/standard_python3/bundled-services/mail/wsgi/requirements.txt

⚠️ Warning

appengine-python-standard 2.0.1 requires Pillow, which is not installed.

Breaking Change Risk

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Summary by cubic

Pin pillow to 12.3.0+ in the mail WSGI service’s requirements to remove known vulnerabilities and ensure the library is installed. This satisfies appengine-python-standard’s dependency and keeps image handling secure.

^{Written for commit 64995ae. Summary will update on new commits.}

[deargvp1]

This major version upgrade from Pillow 9.5.0 to 12.3.0 includes several significant breaking changes that require code modifications and environment updates.

Key Breaking Changes:

• Python Version Support: Support for Python 3.7, 3.8, and 3.9 has been dropped across versions 10.0.0, 11.0.0, and 12.0.0. Your environment must be using at least Python 3.10. [2, 3, 9]
• Removed Image Constants: In version 10.0.0, many deprecated constants were removed and replaced by enums. This is a frequent cause of breakage. For example:
  • PIL.Image.ANTIALIAS is removed. Use PIL.Image.Resampling.LANCZOS instead. [15]
  • PIL.Image.CUBIC is removed. Use PIL.Image.Resampling.BICUBIC instead. [14]
• API and Module Removals:
  • v10.0.0: im.category attribute, support for Tk/Tcl 8.4, and several JpegImagePlugin and ImagePalette parameters have been removed. [6, 11]
  • v11.0.0: PyAccess, Image.USE_CFFI_ACCESS, and the internal PSFile class were removed. [3]
  • v12.0.0: Several internal functions like ImageFile.raise_oserror and IptcImageFile helpers were removed. [2]

Recommendation:

This upgrade requires significant developer action. Before merging, you must:

1. Ensure your project is running on Python 3.10 or newer.
2. Review your code for usage of removed constants like ANTIALIAS and CUBIC and update them to use the new Image.Resampling enum values.
3. Thoroughly test all image processing functionality, as other less common API removals may affect your application.

Source: Pillow Changelog [1, 5]

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.

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[cubic-dev-ai]

No issues found across 1 file

_{Re-trigger cubic}

[gemini-code-assist]

Code Review

This pull request adds a pinned dependency on pillow>=12.3.0 in requirements.txt to mitigate a security vulnerability. However, since version 12.3.0 is currently unreleased on PyPI, this change will cause pip install to fail. It is recommended to downgrade the pinned version to >=12.2.0, which is the latest stable release containing the necessary security patches.

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[gemini-code-assist]

Pillow version 12.3.0 is currently unreleased on PyPI (the latest stable release is 12.2.0). Pinning >=12.3.0 will cause pip install to fail because it cannot resolve the dependency. To avoid breaking the build while still resolving the security vulnerabilities, please downgrade the pin to >=12.2.0, which is the latest stable release on PyPI and includes the security patches.

pillow>=12.2.0 # not directly required, pinned by Snyk to avoid a vulnerability