{"schema":"threatline.record/2","record":{"id":"CVE-2026-100868","aliases":["CVE-2026-45805","GHSA-22qr-rp27-j9wm","GHSA-ch2q-6x56-qg5r"],"summary":"Penpot before 2.18.0 Unauthenticated WebSocket Access via MCP Bridge","details":"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.","categories":["Libraries & packages"],"product":"penpot","vendor":"penpot","ecosystem":"npm","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100868","source_modified_at":"2026-10-08T15:22:06.862Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"penpot","vendor":"penpot","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"2.18.0"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100868","source_modified_at":"2026-10-08T15:22:06.862Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"@penpot/mcp","vendor":"penpot","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"2.15.4"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-22qr-rp27-j9wm","source_modified_at":"2026-09-28T03:56:37.387014434Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"@penpot/mcp","ecosystem":"npm","purl":"pkg:npm/%40penpot/mcp"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.15.0"}]}],"versions":[]}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100868","source_modified_at":"2026-10-08T15:22:06.862Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"penpot","ecosystem":null},"version":"2.18.0","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-22qr-rp27-j9wm","source_modified_at":"2026-09-28T03:56:37.387014434Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"@penpot/mcp","ecosystem":"npm","purl":"pkg:npm/%40penpot/mcp"},"version":"2.15.0"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00257,"percentile":0.16466,"score_date":"2026-10-23"},"published_at":"2026-09-27T13:09:53.387Z","modified_at":"2026-10-08T15:22:06.862Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100868","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-08T15:22:06.862Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-22qr-rp27-j9wm","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-09-28T03:56:37.387014434Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100868","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/penpot/penpot/security/advisories/GHSA-ch2q-6x56-qg5r","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/penpot/penpot/commit/b5274a44766d095247037be18c1d1918ac67ddeb","tags":["patch"]},{"source":"CVE List","url":"https://github.com/penpot/penpot/blob/1d2c37e52c733f74017d90b0fd1ae2d074a5c33d/mcp/packages/server/src/PluginBridge.ts#L52","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/penpot/penpot/security/advisories/GHSA-22qr-rp27-j9wm","tags":["related","vendor-advisory"]},{"source":"CVE List","url":"https://github.com/penpot/penpot","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/penpot-before-2.18.0-unauthenticated-websocket-access-via-mcp-bridge","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-28T15:39:30.501039Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-08T15:22:06.862Z","content_hash":"9f7cbb44af2d9cd481fa515369028d5b121f94a3b6658271b84ddf8df0b370b7"}}