{"id":"CVE-2026-104078","state":"PUBLISHED","title":"Obsidian Desktop < 1.14.0 RCE via MathJax Safe Filter Bypass","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.","publishedAt":"2026-10-08T16:38:20.154Z","updatedAt":"2026-10-27T01:30:34.541Z","severity":{"score":8.4,"label":"High","version":"4.0","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","source":"VulnCheck"},"assigner":"VulnCheck","products":["Obsidian Obsidian Desktop"],"affected":[{"vendor":"Obsidian","product":"Obsidian Desktop","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.14.0","versionType":"semver"}]}],"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"],"weaknesses":["CWE-79","CWE-1188"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/104xxx/CVE-2026-104078.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-104078","state":"PUBLISHED","datePublished":"2026-10-08T16:38:20.154Z","dateUpdated":"2026-10-27T01:30:34.541Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-01T18:02:50.083Z"},"containers":{"cna":{"title":"Obsidian Desktop < 1.14.0 RCE via MathJax Safe Filter Bypass","descriptions":[{"lang":"en","value":"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. 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