{"cve":"CVE-2026-63188","nvd":{"published":"2026-08-19T20:17:20.230","modified":"2026-09-09T21:15:59.613","status":"Deferred","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.","cvss_v4":{"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","score":8.7},"cvss_v3":null,"cwes":["CWE-22"],"references":["https://github.com/logto-io/logto/commit/5686815955534f803d3d50738259efd0f741e62c","https://github.com/logto-io/logto/pull/9113","https://github.com/logto-io/logto/releases/tag/@logto/tunnel@0.3.9","https://github.com/logto-io/logto/security/advisories/GHSA-rxjr-6c9q-h67x"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-63188","score":0.0054,"percentile":0.45453,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rxjr-6c9q-h67x","url":"https://osv.dev/vulnerability/GHSA-rxjr-6c9q-h67x","summary":"logto-tunnel serves files outside --experience-path via path traversal","modified":"2026-08-19T20:41:05.239854Z","packages":[{"ecosystem":"npm","name":"@logto/tunnel","purl":"pkg:npm/%40logto/tunnel","ranges":["<0.3.9"],"fixed":["0.3.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}