{"cve":"CVE-2026-15074","nvd":{"published":"2026-07-23T04:16:31.980","modified":"2026-07-28T17:02:14.703","status":"Analyzed","description":"@fastify/static up to and including version 10.1.0 fails to reject dot-dot path segments in request pathnames before the file-resolution stage. This is a bypass of the earlier fix for CVE-2026-6414, which only covered encoded forward slashes. Because the underlying send library normalizes dot segments before applying its own path-traversal guard, an unauthenticated attacker can bypass any route-scoped middleware and read files inside the static root that live under the guarded URL prefix. The bypass does not allow access outside the configured static root by itself, it defeats route-guard filtering only. The issue is patched in @fastify/static 10.1.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-22"],"references":["https://cna.openjsf.org/security-advisories.html","https://github.com/fastify/fastify-static/security/advisories/GHSA-83w8-p2f5-377r"],"products":["fastify:fastify-static"],"source":"nvd","synced_at":"2026-10-19T22:45:53.305392138+00:00"},"epss":{"cve":"CVE-2026-15074","score":0.00672,"percentile":0.52065,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-83w8-p2f5-377r","url":"https://osv.dev/vulnerability/GHSA-83w8-p2f5-377r","summary":"@fastify/static vulnerable to route guard bypass via path traversal","modified":"2026-07-24T17:11:53.333358Z","packages":[{"ecosystem":"npm","name":"@fastify/static","purl":"pkg:npm/%40fastify/static","ranges":["<10.1.1"],"fixed":["10.1.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}