Tunnel Client MCP Server
by openaiCustomer-run client for Secure MCP Tunnel: connect private or localhost MCP servers to ChatGPT, Codex, the Responses API, and AgentKit without exposing them to the public internet.
Tunnel Client is an open-source mcp server by openai, written mainly in Go, with 612 GitHub stars and the Apache-2.0 license. Its code was last updated Oct 31, 2026.
Scan summary: scanned Nov 5, 2026 at commit fb43d56. Seen able to read environment and secrets. Scan policy
ScannedScanned. The automated checks below ran on the commit shown. Read each line for what was and was not covered.
Full scan at
fb43d56 · Nov 5, 2026 ScannedStatic, secrets and dependency checks completed with no critical findings. BuildsIt installed from a fresh machine.
Passed. This check ran and found nothing it flags.Static code scanpassPassed. This check ran and found nothing it flags.
Passed. This check ran and found nothing it flags.Secrets scanpassPassed. This check ran and found nothing it flags.
Flagged. This check found an issue. See the findings below.Dependency audit79 known vulnerabilitiesfailFlagged. This check found an issue. See the findings below.
Warning. This check found something worth reading in the findings below. It is not proof of a problem.ManifestnonewarnWarning. This check found something worth reading in the findings below. It is not proof of a problem.
Passed. This check ran and found nothing it flags.BuildpassPassed. This check ran and found nothing it flags.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Boot & handshaken/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Network egressn/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Not applicable. This check does not apply to this kind of project, or it was not run in this scan.Reproducible (×3)n/aNot applicable. This check does not apply to this kind of project, or it was not run in this scan.
Findings (39)
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- highHigh. Something risky that needs a close look before you install.dependencies issueDetails are available to the maintainer after claiming this listing.
- mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.nanoid@3.3.11: 3 known vulnerabilitiesGHSA-28wg-ghj8-5hjv, GHSA-2v37-7h3g-55p8, GHSA-xwg4-73v4-xw9w
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.picomatch@4.0.3: 2 known vulnerabilitiesGHSA-3v7f-55p6-f55p, GHSA-c2c7-rcm5-vvqj
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.postcss@8.5.6: 4 known vulnerabilitiesGHSA-6g55-p6wh-862q, GHSA-fxqj-rqcc-2cmp, GHSA-qx2v-qp2m-jg93, GHSA-r28c-9q8g-f849
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.rollup@4.57.1: 1 known vulnerabilityGHSA-mw96-cpmx-2vgc
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.source-map-js@1.2.1: 1 known vulnerabilityGHSA-68fv-2mgg-jv7q
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.vite@5.4.3: 20 known vulnerabilitiesGHSA-356w-63v5-8wf4, GHSA-4r4m-qw57-chr8, GHSA-4w7w-66w2-5vf9, GHSA-587h-7wmj-h5pm, GHSA-64vr-g452-qvp3 +15 more
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.ws@8.19.0: 2 known vulnerabilitiesGHSA-58qx-3vcg-4xpx, GHSA-96hv-2xvq-fx4p
adminui/pnpm-lock.yaml - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.compress@v1.18.0: 2 known vulnerabilitiesGO-2026-5841, GO-2026-5841
compliance/tunnel-client-runtime-cloudflared.spdx.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.v4@v4.1.4: 6 known vulnerabilitiesGHSA-4w3g-jfj2-cw2q, GHSA-mgcc-cww5-fp2q, GHSA-vvm8-gf78-28g4, GHSA-4w3g-jfj2-cw2q, GHSA-mgcc-cww5-fp2q +1 more
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.In tests/examples/docs: Touches a sensitive credential location (SSH keys, cloud credentials, browser data or wallets). Expected for some tools, such as browser automation; check why.
plugins/tunnel-mcp/mcp/server.test.cjs:211 - lowLow. Minor, or common in normal tools. Shown for information.In tests/examples/docs: Touches a sensitive credential location (SSH keys, cloud credentials, browser data or wallets). Expected for some tools, such as browser automation; check why.
plugins/tunnel-mcp/mcp/server.test.cjs:1467 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: private-key
e2e/testdata/test_server_key.pem:2 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
e2e/oauth_protection_e2e_test.go:21 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
pkg/runtimeharpoon/host_registration_test.go:296 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: cloudflare-api-key
scripts/prepare_sbom_source_test.py:14 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key19 matches in this file
pkg/runtimeharpoon/catalog_digest_test.go:36 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
testsupport/mockmcpserver/mock_mcp_server_test.go:477 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
pkg/adminui/log_export_test.go:343 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key2 matches in this file
testsupport/mockmcpserver/mock_mcp_server.go:1035 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key
pkg/runtimeconfig/shared_config_test.go:45 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: private-key
plugins/tunnel-mcp/mcp/server.test.cjs:600 - lowLow. Minor, or common in normal tools. Shown for information.Possible example credential in docs/tests: generic-api-key4 matches in this file
plugins/tunnel-mcp/mcp/server.test.cjs:140 - lowLow. Minor, or common in normal tools. Shown for information.@vitest/mocker@3.2.4: 2 known vulnerabilitiesGHSA-82fw-gwwq-j7x9, GHSA-qxg6-89mg-rqv8
adminui/pnpm-lock.yaml - lowLow. Minor, or common in normal tools. Shown for information.deepmerge@4.3.1: 1 known vulnerabilityGHSA-gcqx-w48m-w2h4
adminui/pnpm-lock.yaml - lowLow. Minor, or common in normal tools. Shown for information.esbuild@0.21.5: 1 known vulnerabilityGHSA-67mh-4wv8-2f99
adminui/pnpm-lock.yaml - lowLow. Minor, or common in normal tools. Shown for information.svelte@4.2.20: 6 known vulnerabilitiesGHSA-crpf-4hrx-3jrp, GHSA-f7gr-6p89-r883, GHSA-m56q-vw4c-c2cp, GHSA-phwv-c562-gvmh, GHSA-pr6f-5x2q-rwfp +1 more
adminui/pnpm-lock.yaml - lowLow. Minor, or common in normal tools. Shown for information.crypto@v0.58.0: 2 known vulnerabilitiesGO-2026-5932, GO-2026-5932
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.net@v0.60.0: 6 known vulnerabilitiesGO-2026-6860, GO-2026-6866, GO-2026-6860, GO-2026-6866, GO-2026-6860 +1 more
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.net@v0.61.0: 4 known vulnerabilitiesGO-2026-6860, GO-2026-6866, GO-2026-6860, GO-2026-6866
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.otel@v1.43.0: 3 known vulnerabilitiesGO-2026-5158, GO-2026-5158, GO-2026-5158
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.sdk@v1.43.0: 3 known vulnerabilitiesGO-2026-6505, GO-2026-6505, GO-2026-6505
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.v5@v5.3.1: 2 known vulnerabilitiesGHSA-j6qf-3m9c-vwj3, GHSA-j6qf-3m9c-vwj3
compliance/tunnel-client-runtime-cloudflared.spdx.json - lowLow. Minor, or common in normal tools. Shown for information.go.opentelemetry.io/otel@1.43.0: 1 known vulnerabilityGO-2026-5158
go.mod - lowLow. Minor, or common in normal tools. Shown for information.go.opentelemetry.io/otel/sdk@1.43.0: 1 known vulnerabilityGO-2026-6505
go.mod - lowLow. Minor, or common in normal tools. Shown for information.golang.org/x/net@0.60.0: 2 known vulnerabilitiesGO-2026-6860, GO-2026-6866
go.mod - lowLow. Minor, or common in normal tools. Shown for information.No manifest declaring network access and environment variables (agent.json)
- lowLow. Minor, or common in normal tools. Shown for information.Couldn't work out how to start the server. Set "entrypoint" in agent.json.
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|---|---|---|---|---|
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