claude-code-router CORS. misconfiguration_CVE-2025-57755

8.1 / 10

HIGH

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

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.

Basic Information

ID CVE-2025-57755

Source GitHub_M

Published Aug 21, 2025 at 16:21

Affected Product

Vendor musistudio

Product claude-code-router

Version < 1.0.34

Affected Versions musistudio claude-code-router < 1.0.34

CWE Classification

CWE-200 CWE-942

References

github.com /musistudio/claude-code-router/security/advisories/GHSA-8hmm-4crw-vm2c

{
    "lastseen": "",
    "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.",
    "published": "2025-08-21T16:21:33.485Z",
    "modified": "2025-08-21T16:21:33.485Z",
    "type": "cve",
    "title": "claude-code-router CORS. misconfiguration",
    "source": "GitHub_M",
    "references": "https://github.com/musistudio/claude-code-router/security/advisories/GHSA-8hmm-4crw-vm2c",
    "id": "CVE-2025-57755",
    "bulletinFamily": "",
    "cwe": [
        "CWE-200",
        "CWE-942"
    ],
    "cvelist": null,
    "sourceData": "musistudio claude-code-router < 1.0.34",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "claude-code-router",
    "version": "< 1.0.34",
    "vendor": "musistudio",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}