BA-009 — Configure secure CORS from validated origins

[MaryammAli]

• Type: Security
• Affected area: src/main.ts, configuration
• BackendAcademy
• Summary: A permissive or absent CORS policy can expose authenticated APIs to unintended browser origins.
• Acceptance criteria: Production requires an explicit allow-list; credentials behavior is intentional; preflight tests cover allowed and denied origins.

[Adjutant500]

@Adjutant500 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi Maintainer please I will like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Adjutant500 to this issue.

[edochieblessing09-max]

@edochieblessing09-max has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I’d like to work on this issue. I understand the problem described and I’m confident I can investigate it, implement the necessary changes, and test the solution properly.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @edochieblessing09-max to this issue.

[Alimzy]

@Alimzy has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi! I'd like to work on this issue.

I'm a software engineer with hands-on experience in testing, debugging, and building reliable features across the stack. I'm confident I can take this on and deliver a solid, well-tested solution that follows the project's existing conventions.

I'll make sure to cover the core functionality as well as relevant edge cases to keep things reliable and regression-resistant.

Let me know if I can get started, and I'll provide updates as I progress.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Alimzy to this issue.

[drips-wave]

Congratulations, @Adjutant500! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Adjutant500: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊