[3.13] gh-136992: Add "None" as valid SameSite value as per RFC 6265bis (GH-137040)
#137141
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…bis (pythonGH-137040) The "SameSite" attribute defined in RFC 6265bis [1] allows the "Strict", "Lax" and "None" enforcement modes. We already documented "Strict" and "Lax" as being valid values but "None" was missing from the list. While the RFC has not been formally approved, modern browsers support the "None" value [2, 3] thereby making sense to document it. [1]: https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-rfc6265bis [2]: https://developers.google.com/search/blog/2020/01/get-ready-for-new-samesitenone-secure [3]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#none --------- (cherry picked from commit ae8b7d7) Co-authored-by: Iqra Khan <iqraakhan2519@gmail.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
This was referenced Jul 27, 2025
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I'll merge the 3.13 backport and assign Hugo for the 3.14. |
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Note
This requires first #137140 to land.
The "SameSite" attribute defined in RFC 6265bis 1 allows the "Strict", "Lax" and "None"
enforcement modes. We already documented "Strict" and "Lax" as being valid values
but "None" was missing from the list. While the RFC has not been formally approved,
modern browsers support the "None" value [2, 3] thereby making sense to document it.
(cherry picked from commit ae8b7d7)
Co-authored-by: Iqra Khan iqraakhan2519@gmail.com
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
http.cookiesshould mention thatsamesite=Noneis valid as per RFC6265bis #136992📚 Documentation preview 📚: https://cpython-previews--137141.org.readthedocs.build/