CVE-2025-57755
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product@musistudio/claude-code-router
PublishedAug 21, 2025
First seenAug 21, 2025
Weakness typeCWE-200Sensitive information exposureCWE-942CWE-942
How to fix
Update
- @musistudio/claude-code-router1.0.34 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @musistudio/claude-code-routernpm | v < 1.0.34 | 1.0.34 |
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