GHSA-jh84-7pcc-38gfHighCVSS 5.9

h3 (npm package) versions <= 2.0.1-rc.14 contain a path traversal vulnerability in serveStatic()....

Published
September 6, 2026
Last Modified
September 6, 2026

🔗 CVE IDs covered (1)

📋 Description

h3 (npm package) versions <= 2.0.1-rc.14 contain a path traversal vulnerability in serveStatic(). On Node.js deployments, event.url.pathname is not normalized, so percent-encoded dot segments (%2e%2e) are passed to decodeURI() and decoded to ../ sequences without sanitization. An unauthenticated remote attacker can send crafted requests to endpoints served by serveStatic() to read arbitrary files outside the intended static directory. Fixed in 1.15.6 and 2.0.1-rc.15.

🔗 References (4)