CVE-2025-57755

claude-code-router CORS. misconfiguration

Published Aug 21, 2025 CVSS 4.0 · 8.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-25479 @musistudio/claude-code-router has improper CORS configuration
Github GHSA Github GHSA GHSA-8hmm-4crw-vm2c @musistudio/claude-code-router has improper CORS configuration
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title claude-code-router CORS. misconfiguration
Weaknesses CWE-200
CWE-942
References
Metrics cvssV4_0

{'score': 8.1, 'vector': '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'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 21, 2025, 5:31 PM
Reserved
Aug 19, 2025, 3:16 PM
Status
Deferred
Published
Aug 21, 2025, 5:15 PM
Modified
Jun 17, 2026, 9:43 AM