Obsidian Desktop up to 1.13.x Slides data-background-iframe code injection

Summaryinfo

A vulnerability classified as problematic was found in Obsidian Desktop up to 1.13.x. This affects an unknown function of the component Slides. Such manipulation of the argument data-background-iframe leads to code injection. This vulnerability is listed as CVE-2026-104077. The attack must be carried out locally. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Obsidian Desktop up to 1.13.x. Affected by this issue is an unknown function of the component Slides. The manipulation of the argument data-background-iframe with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at obsidian.md. This vulnerability is handled as CVE-2026-104077 since 10/01/2026. The exploitation is known to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 1.14.0 eliminates this vulnerability.

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Productinfo

Vendor

• Obsidian

Name

• Desktop

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13

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