VULNERABILITY INTELLIGENCE
CVE-2026-9495
CVSS score7.3 HIGH
EPSS probability0.36%
CISA KEVNot currently listed
Published2026-05-26
Last modified2026-07-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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.
Weakness classification
- report@snyk.io: CWE-284
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-284