CVE-2026-63188

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

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 20:17

Updated : 2026-09-09 21:15

NVD link : CVE-2026-63188

Mitre link : CVE-2026-63188

CVE.ORG link : CVE-2026-63188

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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