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Release v16.3.1 - #1473
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Release v16.3.1#1473
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Validates trusted Admin hosts in auth flows
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Oct 22, 2026
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Changes look consistent with other release new version PRs 👍
Confirmed that there are should be no breaking changes associated with the included change
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Release v16.3.1
Patch release that validates trusted Shopify Admin hosts in auth flows. URLs for supported Admin hosts are unchanged.
Changes
ShopifyAPI::Auth.embedded_app_urlnow raisesShopifyAPI::Errors::InvalidShopErrorunless the decodedhostis a trusted Shopify Admin host.ShopifyAPI::Auth::Oauth.begin_authnow validates and normalizesshop, and raisesShopifyAPI::Errors::InvalidShopErrorfor untrusted domains.ShopifyAPI::Utils::ShopValidatornow rejects hosts with non-hostname characters and reads the store handle fromadmin.shopify.com/store/<handle>URLs.Release checklist
lib/shopify_api/version.rbto16.3.1.Gemfile.lock.## 16.3.1inCHANGELOG.md.v16.3.1.rubygemsstack through Shipit.