Add support for partitioned (CHIPS) cookies#572
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alex-gutev wants to merge 3 commits intovimalloc:mainfrom
Open
Add support for partitioned (CHIPS) cookies#572alex-gutev wants to merge 3 commits intovimalloc:mainfrom
alex-gutev wants to merge 3 commits intovimalloc:mainfrom
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This controls whether the JWT access and CSRF protect token cookies are marked as partitioned.
vimalloc
approved these changes
Apr 16, 2026
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It looks like there are a couple lint errors, and |
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This PR introduces support for the Partitioned attribute in cookies generated by
flask-jwt-extended.As browsers move toward deprecating third-party cookies, the CHIPS standard allows cookies to be set in "partitioned" storage using a new jar per top-level site. This is specifically required when the authentication server (API) resides on a different domain than the client application. Partitioned cookies prevent cross-site tracking while allowing functional cross-site needs like authentication.
The Problem
Without the Partitioned attribute, browsers are beginning to surface the following warning (and will eventually block the cookie entirely), when the authentication server resides on a different domain than the client application:
Changes
Added
JWT_COOKIE_PARTITIONEDconfiguration variable (defaults toFalse).Updated
set_access_cookiesandset_refresh_cookiesto include the partitioned parameter when callingset_cookie.