{"id":"EUVD-2026-32910","revision":"2fea64d5b53e4fdcbc6999a545733d0d","records":[{"revision":"2fea64d5b53e4fdcbc6999a545733d0d","observedAt":"2026-10-28T06:08:35.798+00:00","statement":{"source":"euvd","id":"EUVD-2026-32910","aliases":["CVE-2026-44593","GHSA-3636-h3vx-6465"],"title":"esm.sh is a no-build content delivery network (CDN) for web development. In 137 and earlier, the legacy router first retrieves a response from legacyServer, parses the incoming request path, and ultimately writes the data to storage via bui…","description":"esm.sh is a no-build content delivery network (CDN) for web development. In 137 and earlier, the legacy router first retrieves a response from legacyServer, parses the incoming request path, and ultimately writes the data to storage via buildStorage.Put. The router concatenates the path components without sanitizing them, producing a storage key. When this key is used, the underlying file system resolves the relative segments and writes the file to the specified path. Thus an attacker can craft a request that writes data to arbitrary locations on the server.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.7,"severity":null}],"references":["https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3636-h3vx-6465"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32910","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 28, 2026, 2:44:20 PM","dateUpdated":"Jun 2, 2026, 3:01:05 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-32910","identifiers":["EUVD-2026-32910","CVE-2026-44593","GHSA-3636-h3vx-6465"]},"retained":false,"historicalAffected":[]}],"coverage":[]}