CVE-2026-100868 — Penpot before 2.18.0 Unauthenticated WebSocket Access via MCP Bridge
Penpot before 2.18.0 binds the MCP server plugin WebSocket bridge to all network interfaces without authentication in single-user mode. Unauthenticated attackers on adjacent net…
Published: 2026-09-27 · CVSS: 5.3 · CVSS 4.0
Penpot before 2.18.0 binds the MCP server plugin WebSocket bridge to all network interfaces without authentication in single-user mode. Unauthenticated attackers on adjacent networks can connect to the WebSocket port to impersonate the Penpot browser plugin, intercept task payloads, and return forged results to the MCP client.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7