CVE-2026-100868Medium· 6.3▾ TwilightPoC availablePenpot 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 P…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 34.7 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Exploit / PoC code exists
0.3%
Last analysed / modified upstream
0.3% → 0.5%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-105694Medium· 5.4Penpot is an open-source design and prototyping platform
CVE-2026-105695Medium· 5.9Penpot is an open-source design and prototyping platform
CVE-2026-105691Critical· 9.9Penpot is an open-source design and prototyping platform
CVE-2026-105693Medium· 5.3Penpot is an open-source design and prototyping platform
CVE-2026-105688Medium· 6.7Penpot is an open-source design and prototyping platform
CVE-2026-105689Medium· 6.0Penpot is an open-source design and prototyping platform