{"schema":"threatline.record/2","record":{"id":"CVE-2026-104078","aliases":[],"summary":"Obsidian Desktop < 1.14.0 RCE via MathJax Safe Filter Bypass","details":"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.","categories":["Unclassified"],"product":"Obsidian Desktop","vendor":"Obsidian","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104078","source_modified_at":"2026-10-12T20:38:39.389Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Obsidian Desktop","vendor":"Obsidian","versions":[{"status":"affected","version":"0","versionType":"semver","lessThan":"1.14.0"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104078","source_modified_at":"2026-10-12T20:38:39.389Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Obsidian Desktop","ecosystem":null},"version":"1.14.0","basis":"first unaffected version stated in the CVE record"}],"cvss":8.4,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05763,"score_date":"2026-10-23"},"published_at":"2026-10-08T16:38:20.154Z","modified_at":"2026-10-12T20:38:39.389Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104078","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-12T20:38:39.389Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104078","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://obsidian.md/changelog/2026-10-05-desktop-v1.14.4/","tags":["release-notes","patch"]},{"source":"CVE List","url":"https://codeant.ai/security-research/from-markdown-to-a-shell-obsidian-desktop-rce","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/obsidian-desktop-rce-via-mathjax-safe-filter-bypass","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-08T17:58:08.570317Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-12T20:38:39.389Z","content_hash":"b28a9381f7f3a0faef21201604af94b4be19e7d0f5115ffaf1b62d1e13b707ea"}}