SEPTEMBER 19, 2026
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Case File

CVE-2026-63188

HIGH · CVSS 8.7 EPSS 0.44% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-19 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The Logto Tunnel npm package prior to version 0.3.9 is vulnerable to path traversal attacks, allowing unauthenticated users to access files outside the designated static directory by manipulating the request URL. This could lead to unauthorized file disclosure, potentially exposing sensitive information. Organizations using Logto Tunnel should prioritize upgrading to version 0.3.9 to mitigate this high-severity vulnerability.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-63188
Severity
HIGH
CVSS
8.7
EPSS
0.44%

Original NVD 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.