Download Latest Version 3.1.3 source code.tar.gz (770.7 kB)
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flask-3.1.3-py3-none-any.whl 2026-02-19 103.4 kB
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3.1.3 source code.tar.gz 2026-02-19 770.7 kB
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README.md 2026-02-19 534 Bytes
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This is the Flask 3.1.3 security fix release, which fixes a security issue but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/Flask/3.1.3/ Changes: https://flask.palletsprojects.com/page/changes/#version-3-1-3

  • The session is marked as accessed for operations that only access the keys but not the values, such as in and len. GHSA-68rp-wp8r-4726
Source: README.md, updated 2026-02-19