{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.3.9"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5686815955534f803d3d50738259efd0f741e62c"
            }
          ],
          "repo": "https://github.com/logto-io/logto",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rxjr-6c9q-h67x"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63188.json"
  },
  "details": "Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 0.3.9, the Logto Tunnel npm package enabled createStaticFileProxy from packages/tunnel/src/commands/tunnel/index.ts and passed request.url from static asset requests through packages/tunnel/src/commands/tunnel/utils.ts using path.join(staticPath, request.url) and then fs.open(requestPath, \"r\") without URL normalization or a containment check. When --experience-path was enabled and the tunnel port was reachable, an unauthenticated requester could send a path containing ../ to createStaticFileProxy and read files outside the configured static directory that were readable by the logto-tunnel process. The service used server.listen(port), which could expose the tunnel to other hosts depending on the platform and deployment. This issue is fixed in version 0.3.9.",
  "id": "CVE-2026-63188",
  "modified": "2026-09-11T03:30:41.245379458Z",
  "published": "2026-08-19T19:47:05.155Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/releases/tag/@logto/tunnel@0.3.9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63188.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/logto-io/logto/security/advisories/GHSA-rxjr-6c9q-h67x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63188"
    },
    {
      "type": "FIX",
      "url": "https://github.com/logto-io/logto/commit/5686815955534f803d3d50738259efd0f741e62c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/logto-io/logto/pull/9113"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "logto-tunnel serves files outside --experience-path via path traversal"
}