CVE-2025-53528

HighCVSS 7.6/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Jul 21, 2025
Last modified
Jun 17, 2026
NVD status
Deferred

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