Which versions of @musistudio/claude-code-router are affected by CVE-2025-57755?

@musistudio/claude-code-router (npm) versions < 1.0.34 is affected.

Is there a fix for CVE-2025-57755?

Yes. CVE-2025-57755 is fixed in 1.0.34. Upgrade to this version or later.

Is CVE-2025-57755 exploitable, and should I be worried?

Whether CVE-2025-57755 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2025-57755 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

How do I fix CVE-2025-57755?

Upgrade @musistudio/claude-code-router to 1.0.34 or later.

CVE-2025-57755 in @musistudio/claude-code-router

Q: What is CVE-2025-57755?

CVE-2025-57755 is a high-severity security vulnerability in @musistudio/claude-code-router (npm), affecting versions < 1.0.34. It is fixed in 1.0.34.

Q: Is there a fix for CVE-2025-57755?

Yes. CVE-2025-57755 is fixed in 1.0.34. Upgrade to this version or later.

Q: Is CVE-2025-57755 exploitable, and should I be worried?

Whether CVE-2025-57755 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2025-57755 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2025-57755?

Upgrade @musistudio/claude-code-router to 1.0.34 or later.

CVE-2025-57755

CVE-2025-57755 is a high-severity security vulnerability in @musistudio/claude-code-router (npm), affecting versions < 1.0.34. It is fixed in 1.0.34.

Does this CVE actually affect you?

Kodem shows which CVEs are reachable and running in your applications, so you fix what's exploitable, not just what's listed.

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Runtime intelligence, not another scanner.

Summary

@musistudio/claude-code-router has improper CORS configuration

Impact

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.

Affected versions

@musistudio/claude-code-router (< 1.0.34)

Security releases

@musistudio/claude-code-router → 1.0.34 (npm)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

The issue has been patched in v1.0.34.

Frequently Asked Questions

What is CVE-2025-57755? CVE-2025-57755 is a high-severity security vulnerability in @musistudio/claude-code-router (npm), affecting versions < 1.0.34. It is fixed in 1.0.34.
Which versions of @musistudio/claude-code-router are affected by CVE-2025-57755? @musistudio/claude-code-router (npm) versions < 1.0.34 is affected.
Is there a fix for CVE-2025-57755? Yes. CVE-2025-57755 is fixed in 1.0.34. Upgrade to this version or later.
Is CVE-2025-57755 exploitable, and should I be worried? Whether CVE-2025-57755 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2025-57755 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2025-57755? Upgrade @musistudio/claude-code-router to 1.0.34 or later.