# CVE-2025-57755

## Summary

- **CVE ID:** CVE-2025-57755
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U)
- **CWE:** CWE-200, CWE-942
- **Published:** Aug 21, 2025
- **Last Modified:** Mar 13, 2026

## Description

claude-code-router is a powerful tool to route Claude Code requests to different models and customize any request. Due to improper Cross-Origin Resource Sharing (CORS) configuration, there is a risk that user API Keys or equivalent credentials may be exposed to untrusted domains. Attackers could exploit this misconfiguration to steal credentials, abuse accounts, exhaust quotas, or access sensitive data. The issue has been patched in v1.0.34.

## Affected Products

- musistudio — claude-code-router (< 1.0.34)

## References

- [CNA](https://github.com/musistudio/claude-code-router/security/advisories/GHSA-8hmm-4crw-vm2c)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 23.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._