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pypi / flask-wtf

flask-wtf

What changed in flask-wtf 1, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-25.

1 breaking5 new APIs and options1 performance2 fixes and other

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flask-wtf 19 changes

Breaking changes 1

New APIs and options 5

  • A helper for adding CSRF meta tags is available.

    1.3.0release notes

  • The RECAPTCHA_ENABLE setting can disable reCAPTCHA.

    1.3.0release notes

  • reCaptcha now allows a nonce.

    1.3.0release notes

  • Widgets support kwargs for adding custom HTML attributes.

    1.3.0release notes

  • Support was added for alternative captcha services.

    1.0.0release notes

Performance 1

  • Flask-WTF tries not to read uploaded files into memory.

    1.3.0release notes

Fixes and other changes 2