{"id":"CVE-2026-104078","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104078","generatedAt":"2026-10-28T01:02:14.364Z","title":"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…","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.","published":"2026-10-08T17:17:12.000Z","lastModified":"2026-10-12T21:17:08.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.4,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-79","CWE-1188"],"affected":[],"epss":{"score":0.00168,"percentile":0.05996,"date":"2026-10-26","history":[{"date":"2026-10-09","score":0.00294,"percentile":0.2017}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-08T17:17:12.000Z","detail":{"score":"8.4","severity":"HIGH","publishedAt":"2026-10-08T17:17:11.753Z"},"summary":"New CVE, high severity (CVSS 8.4)."}],"references":[{"url":"https://codeant.ai/security-research/from-markdown-to-a-shell-obsidian-desktop-rce","source":"disclosure@vulncheck.com"},{"url":"https://obsidian.md/changelog/2026-10-05-desktop-v1.14.4/","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/obsidian-desktop-rce-via-mathjax-safe-filter-bypass","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104078","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}