{"id":"CVE-2026-86016","revision":"2e36d8d16d594d96aab88daf524e143b","records":[{"revision":"2e36d8d16d594d96aab88daf524e143b","observedAt":"2026-10-29T16:12:12.582+00:00","statement":{"source":"cve-program","id":"CVE-2026-86016","aliases":[],"title":"VNote: Stored XSS via YAML Frontmatter Leading to Local File Read and Remote Exfiltration","description":"VNote is a note-taking platform. Prior to 4.3.0, VNote uses the assignment `preNode.innerHTML = p_metaData` in src/data/extra/web/js/markdownit.js to insert YAML frontmatter metadata into a pre element before the protectFromXss sanitization path runs. Opening an attacker-supplied Markdown note can therefore execute stored JavaScript in the file:// viewer context. Because QWebEngineSettings::LocalContentCanAccessRemoteUrls enables local content to access remote URLs, the script can read reachable local note files and transmit their contents to a remote server without further interaction after the note is opened. This issue is fixed in version 4.3.0.","state":0,"publishedAt":"2026-10-13T19:15:21.682+00:00","modifiedAt":"2026-10-29T14:44:07.158+00:00","affected":[{"ecosystem":"Vendor product","name":"vnote","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"vnotex\",\n                    \"product\": \"vnote\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.3.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x","https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171","https://github.com/vnotex/vnote/releases/tag/v4.3.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-86016","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-86016","identifiers":["CVE-2026-86016"]},"retained":false,"historicalAffected":[]}],"coverage":[]}