Threats Tagged 'cve-2026-86251'
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Threats Tagged 'cve-2026-86251'
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CVE-2026-86251: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in h3js h3CVE-2026-86251 0 h3 versions before 1.15.9 contain a path traversal vulnerability in the serveStatic utility. A double-decoding flaw allows a request path containing double-encoded dot sequences (e.g. %252e%252e) to be decoded to %2e%2e, which survives resolveDotSegments() because that function only checks for literal '.' characters. When the resulting asset ID is resolved by URL-based backends (CDN, S3, object storage), %2e%2e is interpreted as '..' per RFC 3986, enabling path traversal to read arbitrary files from the backend. Join the discussion | CVE Database V5 | 09/06/2026, 12:30:23 UTC Added: 09/06/2026, 12:22:40 UTC |
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