CVE-2026-100868

MediumCVSS 6.3/10Last modified Oct 8, 2026

Description

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.

Metrics

CVSS 3.1 6.3/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-1327

Affected software

No affected versions have been published.

Timeline

Published: Sep 27, 2026
Last modified: Oct 8, 2026
NVD status: Deferred

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