CVE-2025-53528

Cadwyn is vulnerable to an XSS attack through its docs page

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.

Category

7.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Affected: zmievsa cadwyn
Published at:
Updated at:

References

Link Tags
https://github.com/zmievsa/cadwyn/security/advisories/GHSA-2gxp-6r36-m97r
https://github.com/zmievsa/cadwyn/commit/b424ecd57cd8dabbc8fe39b8f8ccafea629c7728

Frequently Asked Questions

What is the severity of CVE-2025-53528?
CVE-2025-53528 has been scored as a high severity vulnerability.
How to fix CVE-2025-53528?
To fix CVE-2025-53528, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-53528 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-53528 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-53528?
CVE-2025-53528 affects zmievsa cadwyn.
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