Search/CVE-2026-100868
● CVE — Medium

CVE-2026-100868

DiscoveredSep 27, 2026UpdatedSep 30, 2026

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.

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CVSS v3.1
6.3 MEDIUM
EPSS
0.53%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 30, 2026 → Oct 26, 2026
▲ 0.28pp
0.26% → 0.53% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorADJACENT
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityLOW
IntegrityLOW
AvailabilityLOW
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Connections
1 relationships
Timeline
disclosure → media coverage
Sep 27, 2026
Disclosure — published as a CVE record. · last revised by NVD Sep 30, 2026