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2025-04-17 05-42-16
Ajit Kurane
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1Comments
Request for Review: Server-Side Captcha Validation in Reactive App
Question
Reactive
Authentication
Best Practices
Security
Application Type
Reactive

Hi Everyone,

I’m working on implementing server-side Captcha validation in our reactive application and would appreciate your feedback.

Could you please review and share your thoughts on the following:

  1. Security Risks: Are there any potential vulnerabilities in this approach?
  2. Penetration Testing: Can this Captcha functionality be bypassed during penetration testing?
  3. Improvements: What measures can we take to strengthen the security of this Captcha implementation?

Your insights will help ensure we deliver a secure solution. Looking forward to your suggestions!



Captcha_POC.oml
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18 Nov 2025
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2024-07-12 05-57-50
Gourav Shrivastava
Champion

Hello @Ajit Kurane 

I think your overall CAPTCHA approach looks fine, and if you follow these steps internally, your flow will be secure enough. There are some steps to verify

  • Always validate the token on the server side (never rely only on client-side checks).

  • Make each token single-use so it can’t be reused again.

  • Reject tokens that are too old (older than a few minutes).

  • Add rate limiting, for example, blocking after too many failed attempts.

  • Keep your secret keys only on the server, never exposed on the client.

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18 Nov 2025
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