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fix: security-enhancement and stricter jwt-claim-validation#918

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ANSHIKATYAGI30:fix-security-enhancement
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fix: security-enhancement and stricter jwt-claim-validation#918
ANSHIKATYAGI30 wants to merge 1 commit into
SdSarthak:mainfrom
ANSHIKATYAGI30:fix-security-enhancement

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Summary

Closes #501

This PR strengthens JWT authentication security by implementing stricter validation for JWT payload claims during token decoding.
The update ensures malformed or incomplete tokens are rejected earlier in the authentication flow by validating required claims (sub, exp, iat) and enforcing stricter timing verification for JWT payloads. These improvements enhance authentication robustness, consistency, and security handling

Type of Change

  • Bug fix
  • New feature
  • Documentation update
  • Refactor
  • Tests
  • Infra / CI

Checklist

  • I have read CONTRIBUTING.md
  • My code follows the project style (PEP 8 for Python, ESLint for TS)
  • I have added/updated tests where relevant
  • pytest backend/tests/ passes locally
  • I have not committed .env or any secrets
  • I have updated documentation if needed

@ANSHIKATYAGI30
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@SdSarthak
Hi,
Please review the PR whenever convenient.
Thank you!

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Security Enhancement: Add Strict JWT Claim Validation

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