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THREAT OPS › Threat News › [NVD] CVE-2026-86253 (MEDIUM 5.9) — 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

[NVD] CVE-2026-86253 (MEDIUM 5.9) — 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

mednvdPublished 2026-09-06

CVE-2026-86253 CVSS: 5.9 MEDIUM Published: 2026-09-06T12:17:16.163

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 re

Indicators of compromise

CVE-2026-86253cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-86253