#2755·Modernizr

Cookie “cookietest” does not have a proper “SameSite” attribute value

Author: tenzapCreated Dec 12, 2024Updated Dec 12, 2024

Type of bug

  • Differences between Can I use & Modernizr
  • False positive
  • Modernizr error

Describe the bug

On firefox esr 128.5.0esr, I'm seeing this warning in the developer console:

Some cookies are misusing the recommended “SameSite“ attribute 2
Cookie “cookietest” does not have a proper “SameSite” attribute value. Soon, cookies without the “SameSite” attribute or with an invalid value will be treated as “Lax”. This means that the cookie will no longer be sent in third-party contexts. If your application depends on this cookie being available in such contexts, please add the “SameSite=None“ attribute to it. To know more about the “SameSite“ attribute, read https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite

How to Reproduce Open a webpage that references modernizr.min.js

Version of modernizr 1.13.0 3.13.0 (EDITED)