CVE-2025-53528
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.
| Software | From | Fixed in |
|---|---|---|
cadwyn
|
- | 5.4.3 |
- https://github.com/pypa/advisory-database/tree/main/vulns/cadwyn/PYSEC-2025-71.yaml
- https://github.com/zmievsa/cadwyn/blob/5.4.3/CHANGELOG.md#543
- https://github.com/zmievsa/cadwyn/commit/b424ecd57cd8dabbc8fe39b8f8ccafea629c7728
- https://github.com/zmievsa/cadwyn/security/advisories/GHSA-2gxp-6r36-m97r
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