CVE-2026-104078

HighCVSS 7.8

Published: 08/10/2026(UTC)Updated: 12/10/2026(UTC)Translated: 08/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.17%

6th percentile - higher than 6% of all known CVEs

Summary

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.

Risk Assessment

The risk includes arbitrary code execution on the victim's machine, potentially leading to full system and data compromise.

Recommendation

It is recommended to upgrade Obsidian Desktop to version 1.14.0 or later, which includes the fix.

Other vulnerabilities in Obsidian Desktop

CVE-2026-104077High
Obsidian Desktop before 1.14.0 contains a remote code execution vulnerability that allows attackers to craft malicious Markdown notes exploiting insufficient sanitization of the data-background-iframe attribute, which bypasses DOMPurify and is processed by the bundled Reveal.js 4.3.1 within the Slides core plugin, allowing a javascript: URL to execute in the resulting background iframe. Because Node integration is enabled and context isolation is disabled in Obsidian's vault renderer, the injected script can call parent.require() to access Node APIs such as fs and child_process, enabling arbitrary operating system command execution when the victim opens the note and manually starts the presentation.

Original NVD description (English source)

Vulnerability data from NVD (NIST) · CISA KEV · EPSS