{"id":"CVE-2026-104078","aliases":[],"title":"Obsidian Desktop < 1.14.0 RCE via MathJax Safe Filter Bypass","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"Obsidian","name":"Obsidian Desktop","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.14.0","versionType":"semver"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-104078"}],"remediation":[],"description":"Obsidian Desktop before 1.14.0 contains a filter bypass vulnerability in the bundled MathJax 3.2.2 Safe component that allows attackers to execute arbitrary code by embedding a crafted \\href value with a TAB byte in the URL scheme, causing filterURL to produce an empty protocol that bypasses the configured safeProtocols restrictions. Attackers can craft a note containing a malicious MathJax formula that renders as a javascript: URL anchor, which when clicked by the victim in Live Preview executes in the Node-integration-enabled vault renderer via require('child_process'), achieving arbitrary operating system command execution as the desktop user.","severity":"high","score":8.4,"published":"2026-10-08T16:38:20.154Z","modified":"2026-10-27T01:30:34.541Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://obsidian.md/changelog/2026-10-05-desktop-v1.14.4/","https://codeant.ai/security-research/from-markdown-to-a-shell-obsidian-desktop-rce","https://www.vulncheck.com/advisories/obsidian-desktop-rce-via-mathjax-safe-filter-bypass"],"sources":[{"name":"CVE","id":"CVE-2026-104078","modified":"2026-10-27T01:30:34.541Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-104078"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.4},{"source":"VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:10:32.935Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}