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Copy file name to clipboardExpand all lines: CHANGELOG.md
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@@ -10,7 +10,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
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> and production-quality but may have breaking changes before GA.
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## [Unreleased]
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### Security
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- Copilot extension CORS policy changed from wildcard (`Access-Control-Allow-Origin: *`) to explicit origin allowlist via `ALLOWED_ORIGINS`, with secure GitHub defaults.
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### Breaking Changes
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- Clients calling protected Copilot extension API routes without an `Origin` header are now rejected (`403`).
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- Clients previously relying on unrestricted cross-origin access must configure `ALLOWED_ORIGINS` explicitly.
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