fix: webhook HMAC signature serialization mismatch (BUG-17)#6
Merged
govindkavaturi-art merged 1 commit intomainfrom Mar 31, 2026
Merged
fix: webhook HMAC signature serialization mismatch (BUG-17)#6govindkavaturi-art merged 1 commit intomainfrom
govindkavaturi-art merged 1 commit intomainfrom
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deliver_webhook() was sending json.dumps(body) but sign_payload() computed HMAC over json.dumps(body, sort_keys=True, default=str). Key ordering differed, making every signature unverifiable. Fix: all three delivery branches (POST/PUT/PATCH) now serialize with sort_keys=True, default=str to match sign_payload(). Fixes #5 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
deliver_webhook()sentjson.dumps(body)butsign_payload()computed HMAC overjson.dumps(body, sort_keys=True, default=str)sort_keys=True, default=strFixes #5
Test plan
test_webhook_secret.pypasses