fix(weixin): use CreateSafeHTTPClient for media downloads - #3324
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Weixin CDN/remote media fetches used the plain iLink api.HttpClient, so redirects could reach loopback/private hosts. Add a dedicated mediaClient via CreateSafeHTTPClient and ValidateSafeHTTPURL before media GET/POST (sibling of wecom sipeed#3323; leave iLink API client unchanged).
This was referenced Aug 9, 2026
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This was referenced Aug 16, 2026
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Summary
api.HttpClient, so redirects could reach loopback / private hosts.mediaClientviautils.CreateSafeHTTPClientandValidateSafeHTTPURLbefore media GET/POST.DownloadFilechannels).Test plan
go test ./pkg/channels/weixin/ -count=1(includes new redirect-to-private reject)Made with Cursor