Penpot: MCP REPL server binds to 0.0.0.0 with unauthenticated /execute endpoint — RCE

{
  "id": "bb0f74b55a2bc9b49a37f89359bf5ef27118209b9dd73a4026bdca1d8e9fa8e3",
  "url": "https://osv.dev/vulnerability/CVE-2026-45805",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Penpot: MCP REPL server binds to 0.0.0.0 with unauthenticated /execute endpoint — RCE",
    "summary": "Penpot is an open-source design tool for design and code collaboration. Prior to 2.15.0, Penpot MCP's mcp/packages/server/src/ReplServer.ts bound the ReplServer to 0.0.0.0:4403 and exposed an unauthenticated /execute endpoint that passed the code field to PluginBridge.executePluginTask(), allowing anyone on the network to execute JavaScript on the server. This issue is fixed in version 2.15.0.",
    "evidence": "osv:CVE-2026-45805",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-45805",
      "aliases": [
        "CVE-2026-45805",
        "GHSA-22qr-rp27-j9wm"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/penpot/penpot",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "bd3ca6f8e56869a18731544099c35bd4ab2824b6"
                },
                {
                  "fixed": "798ee46b4a84ee6dfc756b001f33acbe0280d62f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.15.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "798ee46b4a84ee6dfc756b001f33acbe0280d62f"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bd3ca6f8e56869a18731544099c35bd4ab2824b6"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.15.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.15.0-RC4",
            "2.14.4",
            "2.15.0-RC3",
            "2.14.5-RC2",
            "2.14.5-RC1",
            "2.14.3",
            "2.14.3-RC1",
            "2.14.2",
            "2.14.1",
            "2.14.1-RC1",
            "2.14.0",
            "2.14.0-RC5",
            "2.14.0-RC4",
            "2.14.0-RC3",
            "2.14.0-RC2",
            "2.14.0-RC1",
            "2.10.0-RC1",
            "2.7.0-RC1",
            "2.6.0-RC1",
            "2.5.0-RC1",
            "2.5.0-DEV",
            "pre-lazy-loading",
            "1.14.1-beta",
            "1.14.0-beta",
            "1.9.0-alpha",
            "1.8.2-alpha",
            "1.8.1-alpha",
            "1.8.0-alpha",
            "1.7.4-alpha",
            "1.7.3-alpha",
            "1.7.2-alpha",
            "1.7.1-alpha",
            "1.7.0-alpha",
            "1.6.5-alpha",
            "1.6.4-alpha",
            "1.6.3-alpha",
            "1.6.2-alpha",
            "1.6.1-alpha",
            "1.6.0-alpha",
            "1.5.4-alpha",
            "1.5.3-alpha",
            "1.5.2-alpha",
            "1.5.1-alpha",
            "1.5.0-alpha",
            "1.4.1-alpha",
            "1.4.0-alpha",
            "1.4.0-dev",
            "1.3.0-alpha",
            "1.2.0-alpha",
            "1.1.0-alpha",
            "1.0.0-alpha",
            "0.1.0",
            "0.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45805.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.535372862Z",
      "provider": "osv",
      "references": [
        "https://github.com/penpot/penpot/releases/tag/2.15.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45805.json",
        "https://github.com/penpot/penpot/security/advisories/GHSA-22qr-rp27-j9wm",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45805",
        "https://github.com/penpot/penpot/issues/9518",
        "https://github.com/penpot/penpot/commit/798ee46b4a84ee6dfc756b001f33acbe0280d62f"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-749"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45805.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45805",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521274,
  "published_at": "2026-07-15T15:11:22.168+00:00"
}