CVE-2026-45805
Penpot: MCP REPL server binds to 0.0.0.0 with unauthenticated /execute endpoint — RCE
- State
- Published
- Severity
- 8.8 High
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Reserved
- May 13, 2026
Description
Penpot is an open-source design tool for design and code collaboration. Prior to 2.15.0, Penpot MCP's mcp/packages/server/src/ReplServer.ts bound the ReplServer to 0.0.0.0:4403 and exposed an unauthenticated /execute endpoint that passed the code field to PluginBridge.executePluginTask(), allowing anyone on the network to execute JavaScript on the server. This issue is fixed in version 2.15.0.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-749 Exposed Dangerous Method or Function
Affected Products
| Product | Versions |
|---|---|
penpotpenpot |
|
References
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