{"id":"CVE-2026-63188","state":"PUBLISHED","title":"logto-tunnel serves files outside --experience-path via path traversal","description":"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.","publishedAt":"2026-08-19T19:47:05.155Z","updatedAt":"2026-08-21T21:48:40.521Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["logto-io logto"],"affected":[{"vendor":"logto-io","product":"logto","versions":[{"version":"< 0.3.9","status":"affected"}]}],"references":["https://github.com/logto-io/logto/security/advisories/GHSA-rxjr-6c9q-h67x","https://github.com/logto-io/logto/pull/9113","https://github.com/logto-io/logto/commit/5686815955534f803d3d50738259efd0f741e62c","https://github.com/logto-io/logto/releases/tag/@logto/tunnel@0.3.9"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63188.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63188","state":"PUBLISHED","datePublished":"2026-08-19T19:47:05.155Z","dateUpdated":"2026-08-21T21:48:40.521Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-15T22:13:00.721Z"},"containers":{"cna":{"title":"logto-tunnel serves files outside --experience-path via path traversal","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"logto-io","product":"logto","versions":[{"version":"< 0.3.9","status":"affected"}]}],"references":[{"url":"https://github.com/logto-io/logto/security/advisories/GHSA-rxjr-6c9q-h67x","name":"https://github.com/logto-io/logto/security/advisories/GHSA-rxjr-6c9q-h67x","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/logto-io/logto/pull/9113","name":"https://github.com/logto-io/logto/pull/9113","tags":["x_refsource_MISC"]},{"url":"https://github.com/logto-io/logto/commit/5686815955534f803d3d50738259efd0f741e62c","name":"https://github.com/logto-io/logto/commit/5686815955534f803d3d50738259efd0f741e62c","tags":["x_refsource_MISC"]},{"url":"https://github.com/logto-io/logto/releases/tag/@logto/tunnel@0.3.9","name":"https://github.com/logto-io/logto/releases/tag/@logto/tunnel@0.3.9","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-19T19:47:05.155Z"},"source":{"advisory":"GHSA-rxjr-6c9q-h67x","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-21T21:09:50.936080Z","id":"CVE-2026-63188","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-21T21:48:40.521Z"}}]}}}