{"api_version":"1","generated_at":"2026-06-15T22:46:46+00:00","cve":"CVE-2026-49993","urls":{"html":"https://cve.report/CVE-2026-49993","api":"https://cve.report/api/cve/CVE-2026-49993.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-49993","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49993"},"summary":{"title":"@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)","description":"Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.7 and 4.4.7.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-06-12 14:16:32","updated_at":"2026-06-15 18:10:01"},"problem_types":["CWE-749","CWE-749 CWE-749: Exposed Dangerous Method or Function"],"metrics":[{"version":"4.0","source":"security-advisories@github.com","type":"Secondary","score":"5.9","severity":"MEDIUM","vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"ADJACENT","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"DECLARED","score":"5.9","severity":"MEDIUM","vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","data":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"}},{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.7","severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}}],"references":[{"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5","name":"https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3","name":"https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3","refsource":"security-advisories@github.com","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g","name":"https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05","name":"https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05","refsource":"security-advisories@github.com","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/nuxt/nuxt/pull/35200","name":"https://github.com/nuxt/nuxt/pull/35200","refsource":"security-advisories@github.com","tags":["Issue Tracking"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49993","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49993","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"nuxt","product":"nuxt","version":"affected >= 3.15.4, < 3.21.7","platforms":[]},{"source":"CNA","vendor":"nuxt","product":"nuxt","version":"affected >= 4.0.0, < 4.4.7","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"49993","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nuxt","cpe5":"nuxt\\/rspack-builder","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"node.js","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"49993","cve":"CVE-2026-49993","epss":"0.000190000","percentile":"0.052720000","score_date":"2026-06-14","updated_at":"2026-06-15 00:14:08"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-49993","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-06-12T13:42:10.549608Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-06-12T13:42:21.829Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g"},{"tags":["exploit"],"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"nuxt","vendor":"nuxt","versions":[{"status":"affected","version":">= 3.15.4, < 3.21.7"},{"status":"affected","version":">= 4.0.0, < 4.4.7"}]}],"descriptions":[{"lang":"en","value":"Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.7 and 4.4.7."}],"metrics":[{"cvssV4_0":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-749","description":"CWE-749: Exposed Dangerous Method or Function","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-12T12:57:43.232Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5"},{"name":"https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g"},{"name":"https://github.com/nuxt/nuxt/pull/35200","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/pull/35200"},{"name":"https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05"},{"name":"https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3"}],"source":{"advisory":"GHSA-x6qj-4h56-5rj5","discovery":"UNKNOWN"},"title":"@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-49993","datePublished":"2026-06-12T12:57:43.232Z","dateReserved":"2026-06-02T18:30:51.283Z","dateUpdated":"2026-06-12T13:42:21.829Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-12 14:16:32","lastModifiedDate":"2026-06-15 18:10:01","problem_types":["CWE-749","CWE-749 CWE-749: Exposed Dangerous Method or Function"],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"ADJACENT","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.1,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nuxt:nuxt\\/rspack-builder:*:*:*:*:*:node.js:*:*","versionStartIncluding":"3.15.4","versionEndExcluding":"3.21.7","matchCriteriaId":"A50747DC-3BEB-4D07-90A7-FA88D3C487E2"},{"vulnerable":true,"criteria":"cpe:2.3:a:nuxt:nuxt\\/rspack-builder:*:*:*:*:*:node.js:*:*","versionStartIncluding":"4.0.0","versionEndExcluding":"4.4.7","matchCriteriaId":"7CBB2D98-3150-4502-AFD6-F8600B1B996B"},{"vulnerable":true,"criteria":"cpe:2.3:a:nuxt:nuxt\\/webpack-builder:*:*:*:*:*:node.js:*:*","versionStartIncluding":"3.15.4","versionEndExcluding":"3.21.7","matchCriteriaId":"0A7E01F0-0E99-4674-B9A1-56F58C0B9C6B"},{"vulnerable":true,"criteria":"cpe:2.3:a:nuxt:nuxt\\/webpack-builder:*:*:*:*:*:node.js:*:*","versionStartIncluding":"4.0.0","versionEndExcluding":"4.4.7","matchCriteriaId":"E916A1BE-6D79-41DD-8CF7-4615411EBC6A"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"49993","Ordinal":"1","Title":"@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-o","CVE":"CVE-2026-49993","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"49993","Ordinal":"1","NoteData":"Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.7 and 4.4.7.","Type":"Description","Title":"@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-o"}]}}}