@koa/router · Vulnerability
cve-program · CVE-2026-9495
PublishedVersions 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.
Read the publisher's advisoryeuvd · EUVD-2026-31792
PublishedVersions 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.
Read the publisher's advisorynvd · CVE-2026-9495
PublishedVersions 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.
Read the publisher's advisoryosv · GHSA-47p6-69vm-vw6v
PublishedVersions 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.
Read the publisher's advisoryAffected versions, risk and source history
Related advisories and sources
Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2026-9495 · CVE overview and exploitation status
cve-program · CVE-2026-9495
- https://security.snyk.io/vuln/SNYK-JS-KOAROUTER-12215044
- https://github.com/koajs/router/issues/202
- https://github.com/koajs/router/pull/206
- https://github.com/koajs/router/commit/d53e17f284557b1f417946f9807ee52290c3c759
euvd · EUVD-2026-31792
- https://security.snyk.io/vuln/SNYK-JS-KOAROUTER-12215044
- https://github.com/koajs/router/issues/202
- https://github.com/koajs/router/pull/206
- https://github.com/koajs/router/commit/d53e17f284557b1f417946f9807ee52290c3c759
nvd · CVE-2026-9495
- https://github.com/koajs/router/commit/d53e17f284557b1f417946f9807ee52290c3c759
- https://github.com/koajs/router/issues/202
- https://github.com/koajs/router/pull/206
- https://security.snyk.io/vuln/SNYK-JS-KOAROUTER-12215044
osv · GHSA-47p6-69vm-vw6v
Related changes
Linked by CVE identifierNo related changes are available here.