MCP Defender
by MCP-DefenderDesktop app that automatically scans and blocks malicious MCP traffic in AI apps like Cursor, Claude, VS Code and Windsurf.
MCP Defender is an open-source mcp server by MCP-Defender, written mainly in TypeScript, with 255 GitHub stars and the AGPL-3.0 license. Its code was last updated Jun 5, 2026.
Scan summary: scanned Nov 5, 2026 at commit 7fa7e75. No capabilities flagged by our checks. 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
7fa7e75 · 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 audit233 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.
Flagged. This check found an issue. See the findings below.Boot & handshakefailFlagged. This check found an issue. See the findings below.
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 (53)
- 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.
- 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.@modelcontextprotocol/sdk@1.12.0: 8 known vulnerabilitiesGHSA-345p-7cg4-v4c7, GHSA-46jr-4wx8-v453, GHSA-6prh-2h8m-c8cw, GHSA-6qxp-vccf-f47h, GHSA-8r9q-7v3j-jr4g +3 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.@xmldom/xmldom@0.8.10: 15 known vulnerabilitiesGHSA-27p8-2357-5qqv, GHSA-2v35-w6hq-6mfw, GHSA-4w3w-2rp5-g8jm, GHSA-6gmq-8vp8-gcm6, GHSA-6h8r-xr42-gp59 +10 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.axios@1.9.0: 32 known vulnerabilitiesGHSA-35jp-ww65-95wh, GHSA-3g43-6gmg-66jw, GHSA-3p68-rc4w-qgx5, GHSA-3w6x-2g7m-8v23, GHSA-42h9-826w-cgv3 +27 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.body-parser@1.20.3: 2 known vulnerabilitiesGHSA-27r3-jxmh-p828, GHSA-v422-hmwv-36x6
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.body-parser@2.2.0: 3 known vulnerabilitiesGHSA-27r3-jxmh-p828, GHSA-v422-hmwv-36x6, GHSA-wqch-xfxh-vrr4
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.brace-expansion@1.1.11: 8 known vulnerabilitiesGHSA-3jxr-9vmj-r5cp, GHSA-6j4f-fj2g-mc7p, GHSA-f886-m6hf-6m8v, GHSA-mh99-v99m-4gvg, GHSA-q2hr-2g5m-vwhr +3 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.brace-expansion@2.0.1: 8 known vulnerabilitiesGHSA-3jxr-9vmj-r5cp, GHSA-6j4f-fj2g-mc7p, GHSA-f886-m6hf-6m8v, GHSA-mh99-v99m-4gvg, GHSA-q2hr-2g5m-vwhr +3 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.browserslist@4.25.0: 2 known vulnerabilitiesGHSA-73wf-gq98-2v4g, GHSA-c83g-rgw3-j3cx
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.electron@35.1.5: 46 known vulnerabilitiesGHSA-2p8c-gr87-2676, GHSA-3c8v-cfp5-9885, GHSA-3qxv-5xgr-q7w9, GHSA-4f78-qhmw-8j8m, GHSA-4p4r-m79c-wq3v +41 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.extract-zip@2.0.1: 2 known vulnerabilitiesGHSA-7pqw-9j4j-h8q3, GHSA-jmr9-qjv8-65gv
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.flatted@3.3.3: 2 known vulnerabilitiesGHSA-25h7-pfq9-p65f, GHSA-rf6f-7fwh-wjgh
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.glob@10.4.5: 2 known vulnerabilitiesGHSA-3g3m-2fjr-6pw4, GHSA-5j98-mcp5-4vw2
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.image-size@0.7.5: 1 known vulnerabilityGHSA-w3rx-r6r6-pgpr
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.ip-address@9.0.5: 6 known vulnerabilitiesGHSA-h3mg-xc3c-68pw, GHSA-j6r3-76f7-8jcv, GHSA-mwp4-54f8-5fhr, GHSA-rpw4-54j3-4h4q, GHSA-rxp7-6hxx-x8q5 +1 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.js-yaml@4.1.0: 5 known vulnerabilitiesGHSA-2883-xcg3-v3hh, GHSA-52cp-r559-cp3m, GHSA-5p4m-2wfm-xmqj, GHSA-h67p-54hq-rp68, GHSA-mh29-5h37-fv8m
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.lodash@4.17.21: 2 known vulnerabilitiesGHSA-r5fr-rjxr-66jc, GHSA-xxjr-mmjv-4gpg
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.minimatch@3.1.2: 3 known vulnerabilitiesGHSA-23c5-xmqv-rm74, GHSA-3ppc-4f35-3m26, GHSA-7r86-cg39-jmmj
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.minimatch@5.1.6: 3 known vulnerabilitiesGHSA-23c5-xmqv-rm74, GHSA-3ppc-4f35-3m26, GHSA-7r86-cg39-jmmj
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.minimatch@9.0.5: 4 known vulnerabilitiesGHSA-23c5-xmqv-rm74, GHSA-3ppc-4f35-3m26, GHSA-7r86-cg39-jmmj, GHSA-g3hv-75wg-m249
package-lock.json - 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
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.path-to-regexp@0.1.12: 1 known vulnerabilityGHSA-37ch-88jc-xwx2
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.path-to-regexp@8.2.0: 2 known vulnerabilitiesGHSA-27v5-c462-wpq7, GHSA-j3q9-mxjg-w52f
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.picomatch@2.3.1: 2 known vulnerabilitiesGHSA-3v7f-55p6-f55p, GHSA-c2c7-rcm5-vvqj
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.picomatch@4.0.2: 2 known vulnerabilitiesGHSA-3v7f-55p6-f55p, GHSA-c2c7-rcm5-vvqj
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.postcss@8.5.3: 4 known vulnerabilitiesGHSA-6g55-p6wh-862q, GHSA-fxqj-rqcc-2cmp, GHSA-qx2v-qp2m-jg93, GHSA-r28c-9q8g-f849
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.rollup@4.41.1: 1 known vulnerabilityGHSA-mw96-cpmx-2vgc
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.source-map-js@1.2.1: 1 known vulnerabilityGHSA-68fv-2mgg-jv7q
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.tmp@0.2.3: 2 known vulnerabilitiesGHSA-52f5-9888-hmc6, GHSA-ph9p-34f9-6g65
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.uuid@11.1.0: 1 known vulnerabilityGHSA-w5hq-g745-h8pq
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.uuid@9.0.1: 1 known vulnerabilityGHSA-w5hq-g745-h8pq
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.vite@6.3.5: 12 known vulnerabilitiesGHSA-4w7w-66w2-5vf9, GHSA-587h-7wmj-h5pm, GHSA-698v-4r3x-3vcv, GHSA-93m4-6634-74q7, GHSA-9jrq-w75r-8gcw +7 more
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.ws@7.5.10: 1 known vulnerabilityGHSA-96hv-2xvq-fx4p
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.ws@8.18.2: 2 known vulnerabilitiesGHSA-58qx-3vcg-4xpx, GHSA-96hv-2xvq-fx4p
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.zod@3.25.34: 1 known vulnerabilityGHSA-mrhx-c7xc-m3w5
package-lock.json - mediumMedium. Worth checking, often a vulnerable dependency or a setup problem.MCP server didn't complete the protocol handshakeserver exited early with code 1
- lowLow. Minor, or common in normal tools. Shown for information.@babel/core@7.27.3: 1 known vulnerabilityGHSA-4x5r-pxfx-6jf8
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@octokit/plugin-paginate-rest@2.21.3: 1 known vulnerabilityGHSA-h5c3-5r3r-rr8q
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@octokit/request@5.6.3: 1 known vulnerabilityGHSA-rmvr-2pp2-xj38
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@octokit/request-error@2.1.0: 1 known vulnerabilityGHSA-xx4v-prfh-6cgc
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@smithy/config-resolver@4.1.3: 1 known vulnerabilityGHSA-6475-r3vj-m8vf
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.@tootallnate/once@2.0.0: 1 known vulnerabilityGHSA-vpq2-c234-7xj6
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.ajv@6.12.6: 1 known vulnerabilityGHSA-2g4f-4pwh-qvx6
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.diff@4.0.2: 1 known vulnerabilityGHSA-73rr-hh4g-fpgx
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.follow-redirects@1.15.9: 1 known vulnerabilityGHSA-r4q5-vmmm-2653
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.postcss-selector-parser@6.1.2: 2 known vulnerabilitiesGHSA-rj75-hqrm-r3gf, GHSA-w9m9-85wc-3x92
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.qs@6.13.0: 5 known vulnerabilitiesGHSA-4mjr-xmp4-gh2g, GHSA-6pq8-jhm2-2vcw, GHSA-6rw7-vpxm-498p, GHSA-q8mj-m7cp-5q26, GHSA-w7fw-mjwx-w883
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.qs@6.14.0: 5 known vulnerabilitiesGHSA-4mjr-xmp4-gh2g, GHSA-6pq8-jhm2-2vcw, GHSA-6rw7-vpxm-498p, GHSA-q8mj-m7cp-5q26, GHSA-w7fw-mjwx-w883
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.yaml@2.8.0: 1 known vulnerabilityGHSA-48c2-rrv3-qjmp
package-lock.json - lowLow. Minor, or common in normal tools. Shown for information.No manifest declaring network access and environment variables (agent.json)
Network activity
During install
codeload.github.comgithub.comregistry.npmjs.orgrelease-assets.githubusercontent.com
While running
Not run — the code wasn't started in this scan
Automated result for the commit shown. See our scan policy. View the scan log
Maintainers can claim the listing to rescan, or dispute a result.
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