GHSA-47p6-69vm-vw6vPublished

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 wh…

cve-program · CVE-2026-9495

Published

@koa/router

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "@koa/router",
                    "versions": [
                        {
                            "version": "14.0.0",
                            "lessThan": "15.0.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "vendor": "n/a"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-31792

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: May 26, 2026, 5:00:04 AM

dateUpdated: May 26, 2026, 12:41:21 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-9495

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-284

Original publisher date fields

published: 2026-05-26T07:16:19.243

lastModified: 2026-07-23T11:10:00.120

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-47p6-69vm-vw6v

Published

@koa/router

npm

SEMVER · introduced 14.0.0 → fixed 15.0.0

Original source record · Cite this exact observation · Complete original publisher JSON