{"id":"CVE-2026-46342","summary":"Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning","details":"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 (\u003cName\u003e_\u003chashId\u003e.json) was actually issued for those inputs by \u003cNuxtIsland\u003e. 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.","aliases":["GHSA-g8wj-3cr3-6w7v"],"modified":"2026-08-12T03:51:33.083499203Z","published":"2026-06-12T12:50:41.589Z","database_specific":{"cwe_ids":["CWE-349","CWE-444","CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46342.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46342.json"},{"type":"ADVISORY","url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-g8wj-3cr3-6w7v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46342"},{"type":"FIX","url":"https://github.com/nuxt/nuxt/pull/35077"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nuxt/nuxt","events":[{"introduced":"c552d1b420caaac0184fd5c332ebc55b0b0d77ad"},{"fixed":"1a8fff351be63bdc639a8b0a2f5a9e74dad240c9"},{"introduced":"8aacdde48e8388c8bb11b9a5c2f59935341bfcfd"},{"fixed":"08f34b5d9f263446354459b6227a8ae0d5ff8e9f"}],"database_specific":{"extracted_events":[{"introduced":"3.1.0"},{"fixed":"3.21.6"},{"introduced":"4.0.0"},{"fixed":"4.4.5"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:*"}}],"versions":["v3.21.5","v3.21.4","v4.4.4","v3.21.3","v4.4.3","v4.4.2","v3.21.2","v4.4.1","v4.4.0","v4.3.1","v3.21.1","v3.21.0","v4.3.0","v3.20.2","v4.2.2","v3.20.1","v4.2.1","v3.20.0","v4.2.0","v3.19.3","v4.1.3","v3.19.2","v4.1.2","v3.19.1","v4.1.1","v3.19.0","v4.1.0","v3.18.1","v4.0.3","v3.18.0","v4.0.2","v4.0.1","v4.0.0","v3.17.7","v3.17.6","v3.17.5","v3.17.4","v3.17.3","v3.17.2","v3.17.1","v3.17.0","v3.16.2","v3.16.1","v3.16.0","v3.15.4","v3.15.3","v3.15.2","v3.15.1","v3.15.0","v3.14.1592","v3.14.159","v3.14.0","v3.13.2","v3.13.1","v3.13.0","v3.12.4","v3.12.3","v3.12.2","v3.12.1","v3.12.0","v3.11.2","v3.11.1","v3.11.0","v3.10.3","v3.10.2","v3.10.1","v3.10.0","v3.9.3","v3.9.2","v3.9.1","v3.9.0","v3.8.2","v3.8.1","v3.8.0","v3.7.4","v3.7.3","v3.7.2","v3.7.1","v3.7.0","v3.6.5","v3.6.4","v3.6.3","v3.6.2","v3.6.1","v3.6.0","v3.5.3","v3.5.2","v3.5.1","v3.5.0","v3.4.3","v3.4.2","v3.4.1","v3.4.0","v3.3.3","v3.3.2","v3.3.1","v3.3.0","v3.2.3","v3.2.2","v3.2.1","v3.2.0","v3.1.2","v3.1.1","3.1.1","v3.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46342.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}