{"cve":{"cve_id":"CVE-2026-39363","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.02292,"epss_percentile":0.80981,"epss_as_of":"2026-06-23","description":"Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default \"...\"). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.","published_at":"2026-04-07T19:10:44.916000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":8.2,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-200","CWE-306"],"nvd_references":["https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:07.381684Z"},"effective_severity":"HIGH","badges":["poc"],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"N","value_label":"None"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"vitejs","vendor_name":"vitejs","product_slug":"vite","product_name":"vite","version_start":">= 8.0.0, < 8.0.5","version_start_inclusive":true,"version_end":">= 8.0.0, < 8.0.5","version_end_inclusive":true,"cpe23_uri":"cve5:vitejs:vite:>= 8.0.0, < 8.0.5:>= 8.0.0, < 8.0.5"},{"vendor_slug":"vitejs","vendor_name":"vitejs","product_slug":"vite","product_name":"vite","version_start":">= 7.0.0, < 7.3.2","version_start_inclusive":true,"version_end":">= 7.0.0, < 7.3.2","version_end_inclusive":true,"cpe23_uri":"cve5:vitejs:vite:>= 7.0.0, < 7.3.2:>= 7.0.0, < 7.3.2"},{"vendor_slug":"vitejs","vendor_name":"vitejs","product_slug":"vite","product_name":"vite","version_start":">= 6.0.0, < 6.4.2","version_start_inclusive":true,"version_end":">= 6.0.0, < 6.4.2","version_end_inclusive":true,"cpe23_uri":"cve5:vitejs:vite:>= 6.0.0, < 6.4.2:>= 6.0.0, < 6.4.2"},{"vendor_slug":"vitejs","vendor_name":"vitejs","product_slug":"vite-plus","product_name":"vite-plus","version_start":"< 0.1.16","version_start_inclusive":true,"version_end":"< 0.1.16","version_end_inclusive":true,"cpe23_uri":"cve5:vitejs:vite-plus:< 0.1.16:< 0.1.16"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2026/CVE-2026-39363.yaml","title":"Vite Dev Server - Arbitrary File Read","author":"theamanrawat","disclosed_at":null}],"news":[],"references":[{"url":"https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-04-07T19:10:44.916000Z","label":"CVE published","source":null},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:53:36.529654Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:36.529654Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:36.529654Z","label":"CVSS score revised","source":"cvelistv5"}]}