Permissive Cross-domain Policy with Untrusted Domains Affecting @musistudio/claude-code-router package, versions <1.0.37
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Aug 2025
- disclosed21 Aug 2025
- creditttttmr
Introduced: 21 Aug 2025
CVE-2025-57755 (opens in a new tab)How to fix?
Upgrade @musistudio/claude-code-router to version 1.0.37 or higher.
Overview
@musistudio/claude-code-router is an Use Claude Code without an Anthropics account and route it to another LLM provider
Affected versions of this package are vulnerable to Permissive Cross-domain Policy with Untrusted Domains due to improper CORS configuration. An attacker can access user API keys or equivalent credentials by sending requests from untrusted domains.