CVE-2026-9495 - Koa Router Access Control Bypass Vulnerability
CVE ID :CVE-2026-9495
Published : May 26, 2026, 5 a.m. | 4 hours ago
Description :Versions of the package @koa/router from 14.0.0 and before 15.0.0 are vulnerable to Access Control Bypass due to the middleware being silently dropped from the execution chain when the router prefix contains path parameters. Depending on what the skipped middleware was supposed to protect, an attacker could bypass authentication and authorization, evade rate limiting or bypass input sanitization.
Severity: 0.0 | NA
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Published : May 26, 2026, 5 a.m. | 4 hours ago
Description :Versions of the package @koa/router from 14.0.0 and before 15.0.0 are vulnerable to Access Control Bypass due to the middleware being silently dropped from the execution chain when the router prefix contains path parameters. Depending on what the skipped middleware was supposed to protect, an attacker could bypass authentication and authorization, evade rate limiting or bypass input sanitization.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...