koa vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary

CVE-2026-27959Highkoa: Koa has Host Header Injection via ctx.hostname CVE-2025-62595Mediumkoa: Koa Vulnerable to Open Redirect via Trailing Double-Slash (//) in back Redirect Logic CVE-2025-8129Lowkoa: Koa Open Redirect via Referrer Header (User-Controlled)CVE-2025-32379Mediumkoa: Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function CVE-2025-25200Criticalkoa: Inefficient Regular Expression Complexity in koa

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