GHSA-qj3p-xc97-xw74: @metamask/sdk MetaMask SDK Indirectly Exposed Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qj3p-xc97-xw74",
  "modified" : "2025-09-15T13:55:56Z",
  "published" : "2025-09-15T13:55:56Z",
  "aliases" : [ ],
  "summary" : "MetaMask SDK indirectly exposed via malicious debug@4.4.2 dependency",
  "details" : "### Who is affected?\nThis advisory only applies to developers who use MetaMask SDK in the browser and who, on Sept 8th 2025 between 13:00–15:30 UTC, performed one of the following actions and then deployed their application:\n- Installed MetaMask SDK into a project with a lockfile for the first time\n- Installed MetaMask SDK in a project without a lockfile\n- Updated a lockfile to pull in `debug@4.4.2` (e.g., via `npm update` or `yarn upgrade`)\n\n### What happened?\nOn Sept 8th, 2025 (13:00–15:30 UTC), a malicious version of the `debug` package (v4.4.2) was published to npm. The injected code attempts to interfere with dApp-to-wallet communication when executed in a browser context. \n\nWhile MetaMask SDK itself was not directly impacted, projects installing the SDK during this window may have inadvertently pulled in the malicious version of `debug`.\n\n### Mitigation\n- If your application was rebuilt and redeployed after Sept 8th, 2025, 15:30 UTC, the malicious version of debug should no longer be present. Please also verify that your package manager (npm, yarn, pnpm, etc.) is not caching `debug@4.4.2`.\n- If you have not yet deployed since performing one of the actions above, delete your `node_modules` and reinstall dependencies before deploying.\n- If your application was deployed during the attack window and has not been rebuilt since, perform a clean install of dependencies and redeploy to ensure the malicious package is removed.\n\n### Resources\n[GitHub Advisory for debug](https://github.com/advisories/GHSA-8mgj-vmr8-frr6)",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@metamask/sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.16.0"
      }, {
        "fixed" : "0.33.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.33.0"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@metamask/sdk-react"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.16.0"
      }, {
        "fixed" : "0.33.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.33.0"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@metamask/sdk-communication-layer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.16.0"
      }, {
        "fixed" : "0.33.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.33.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/MetaMask/metamask-sdk/security/advisories/GHSA-qj3p-xc97-xw74"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MetaMask/metamask-sdk/pull/1342"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MetaMask/metamask-sdk/commit/baa185c6cfa97755a3d389d956372ad9eb37c4a4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/MetaMask/metamask-sdk"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-506" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-15T13:55:56Z",
    "nvd_published_at" : null
  }
}