diff --git a/Doc/library/http.cookies.rst b/Doc/library/http.cookies.rst index eb196320721194..46efc45c5e7d96 100644 --- a/Doc/library/http.cookies.rst +++ b/Doc/library/http.cookies.rst @@ -148,9 +148,12 @@ Morsel Objects in HTTP requests, and is not accessible through JavaScript. This is intended to mitigate some forms of cross-site scripting. - The attribute :attr:`samesite` specifies that the browser is not allowed to - send the cookie along with cross-site requests. This helps to mitigate CSRF - attacks. Valid values for this attribute are "Strict" and "Lax". + The attribute :attr:`samesite` controls when the browser sends the cookie with + cross-site requests. This helps to mitigate CSRF attacks. Valid values are + "Strict" (only sent with same-site requests), "Lax" (sent with same-site + requests and top-level navigations), and "None" (sent with same-site and + cross-site requests). When using "None", the "secure" attribute must also + be set, as required by modern browsers. The attribute :attr:`partitioned` indicates to user agents that these cross-site cookies *should* only be available in the same top-level context
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