Troubleshooting
Problem
Cross-site requests nested within a page can fail after browser updates that change the default behavior of HTTP Cookies without the SameSite attribute. The affected requests are sent to hostnames within separate registered domains, not just separate hostnames under the same domain.
Full technical details of the SameSite attribute are available in the following RFC: https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-4.1.2.7
Symptom
The immediate symptom for this problem is an unexpected failure to receive an expected HTTP cookie. The affected URLs are embedded within some other top-level document.
Document Location
Worldwide
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTJ","label":"IBM HTTP Server"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}},{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}},{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]
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Document Information
Modified date:
03 March 2025
UID
ibm11288438