[Backport 21.2.X] fix(http): prevent caching of responses with Set-Cookie headers - #69449
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Skip HttpTransferCache serialization for HTTP responses that contain a Set-Cookie header. Cookie-setting responses commonly represent session-specific, user-specific, or security-sensitive state. Serializing their bodies into SSR TransferState can embed sensitive data into the generated HTML, where it may be reused during hydration or replayed by a shared cache/CDN. (cherry picked from commit 80795de)
JeanMeche
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Jun 19, 2026
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Backport of #69385