{"apiVersion":"1.0","identifier":"CVE-2026-63188","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":"2026-08-19T20:17:20","lastModifiedAt":"2026-08-21T22:16:42","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63188","cvssScore":8.7,"cvssVector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00441,"riskScore":0.9,"affectedProduct":"Logto","affectedVersions":"<0.3.9","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-63188","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-63188","en":"https://www.redsauce.net/en/cves/CVE-2026-63188","fr":"https://www.redsauce.net/fr/cves/CVE-2026-63188","pt":"https://www.redsauce.net/pt/cves/CVE-2026-63188","de":"https://www.redsauce.net/de/cves/CVE-2026-63188","sk":"https://www.redsauce.net/sk/cves/CVE-2026-63188","el":"https://www.redsauce.net/el/cves/CVE-2026-63188"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-63188"}}