CVE-2026-45805 HIGH

CVE-2026-45805: Penpot: MCP REPL server binds to 0.0.0.0 with unauthenticated /execute endpoint — RCE

Vendor Penpot
Product penpot
Weakness CWE-749
Published July 15, 2026
Last update July 15, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 15, 2026 CVE published
July 15, 2026 Record updated