{"cve":"CVE-2026-46342","nvd":{"published":"2026-06-12T14:16:31.590","modified":"2026-06-17T10:53:35.220","status":"Analyzed","description":"Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 and @nuxt/nitro-server versions 3.20.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, the /__nuxt_island/* endpoint accepts attacker-controlled props query/body parameters and renders any island component without verifying that the URL-resident hash (<Name>_<hashId>.json) was actually issued for those inputs by <NuxtIsland>. The hash is computed and embedded client-side but never validated server-side, so the same path can return materially different responses depending on the query. This issue has been patched in versions 3.21.6 and 4.4.6.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":2.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79","CWE-349","CWE-444"],"references":["https://github.com/nuxt/nuxt/pull/35077","https://github.com/nuxt/nuxt/security/advisories/GHSA-g8wj-3cr3-6w7v"],"products":["nuxt:nuxt","nuxt:nuxt\\/nitro-server"],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-46342","score":0.00091,"percentile":0.00447,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g8wj-3cr3-6w7v","url":"https://osv.dev/vulnerability/GHSA-g8wj-3cr3-6w7v","summary":"Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning","modified":"2026-07-08T17:45:16.499878459Z","packages":[{"ecosystem":"npm","name":"nuxt","purl":"pkg:npm/nuxt","ranges":[">=3.1.0 <3.21.6"],"fixed":["3.21.6"]},{"ecosystem":"npm","name":"nuxt","purl":"pkg:npm/nuxt","ranges":[">=4.0.0-alpha.1 <4.4.6"],"fixed":["4.4.6"]},{"ecosystem":"npm","name":"@nuxt/nitro-server","purl":"pkg:npm/%40nuxt/nitro-server","ranges":[">=3.20.0 <3.21.6"],"fixed":["3.21.6"]},{"ecosystem":"npm","name":"@nuxt/nitro-server","purl":"pkg:npm/%40nuxt/nitro-server","ranges":[">=4.2.0 <4.4.6"],"fixed":["4.4.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}