{"id":"CVE-2026-53721","aliases":["GHSA-mm7m-92g8-7m47"],"url":"https://o3.security/vulnerability/CVE-2026-53721","summary":"Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher","details":"Nuxt is an open-source web development framework for Vue.js. From versions 3.11.0 to before 3.21.7 and 4.0.0 to before 4.4.7, there is a route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher. This issue has been patched in versions 3.21.7 and 4.4.7.","published":"2026-06-12T13:41:34.022Z","modified":"2026-08-07T11:51:19.041780640Z","cvss":null,"epss":{"score":0.00294,"percentile":0.21659,"asOf":"2026-08-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"nuxt","fixedVersion":"4.4.7"},{"ecosystem":"npm","name":"nuxt","fixedVersion":"3.21.7"}],"fix":{"url":"https://github.com/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb","label":"nuxt/nuxt@07e39cd"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53721.json"},{"type":"ADVISORY","url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-mm7m-92g8-7m47"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53721"},{"type":"FIX","url":"https://github.com/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb"},{"type":"FIX","url":"https://github.com/nuxt/nuxt/commit/3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:19.041780640Z"}}