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CVE-2025-53528PYSEC-2025-71GHSA-2GXP-6R36-M97R

Cadwyn is vulnerable to an XSS attack through its docs page

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.3
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

Cadwyn creates production-ready community-driven modern Stripe-like API versioning in FastAPI. In versions before 5.4.3, the version parameter of the "/docs" endpoint is vulnerable to a Reflected XSS (Cross-Site Scripting) attack. This XSS would notably allow an attacker to execute JavaScript code on a user's session for any application based on Cadwyn via a one-click attack. The vulnerability has been fixed in version 5.4.3.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • zmievsa cadwyn

    fixed in 5.4.3

  • cadwynPyPI

    fixed in 5.4.3

References 2

GitHub · zmievsa/cadwyn