{"id":"CVE-2018-3718","aliases":["EUVD-2021-1580","GHSA-5rc4-8qqh-vq7f"],"status":"published","title":"vercel/serve allows access to restricted files if filename is URL encoded.","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01295,"percentile":0.70532,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-177"],"published":"2018-06-07T02:00:00Z","modified":"2026-10-24T10:31:01Z","fixes":[{"ecosystem":"npm","package":"serve","fixed_in":["6.5.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"serve","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.2"}]}]},{"source":"osv","ecosystem":"npm","package":"serve","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.5.2"}]}]}],"products":[{"vendor":"hackerone","product":"serve node module"},{"vendor":"zeit","product":"serve"}],"references":[{"url":"https://hackerone.com/reports/308721","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-3718","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5rc4-8qqh-vq7f"},{"url":"https://github.com/vercel/serve","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2018-3718","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","status":"published","published":"2018-06-07T02:00:00Z","modified":"2024-09-16T20:36:21.693Z","cwes":["CWE-177"],"updated_at":"2026-11-02T14:35:05.262903Z"}],"euvd":[{"id":"EUVD-2021-1580","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","status":"published","published":"2018-06-07T02:00:00Z","modified":"2024-09-16T20:36:21Z","updated_at":"2026-11-03T00:55:12.625541Z"}],"ghsa":[{"id":"GHSA-5rc4-8qqh-vq7f","title":"vercel/serve allows access to restricted files if filename is URL encoded.","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","status":"published","published":"2021-08-09T22:24:26Z","modified":"2023-09-12T20:58:59Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-177"],"updated_at":"2026-11-02T14:37:05.004935Z"}],"nvd":[{"id":"CVE-2018-3718","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","status":"published","published":"2018-06-07T02:29:08.19Z","modified":"2026-06-17T01:57:43.057Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-177"],"updated_at":"2026-11-02T14:04:28.483469Z"}],"osv":[{"id":"CVE-2018-3718","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","status":"published","published":"2018-06-07T02:29:08.19Z","modified":"2026-10-24T10:31:01.3774128Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:09.442568Z"},{"id":"GHSA-5rc4-8qqh-vq7f","title":"vercel/serve allows access to restricted files if filename is URL encoded.","description":"serve node module suffers from Improper Handling of URL Encoding by permitting access to ignored files if a filename is URL encoded.","status":"published","published":"2021-08-09T22:24:26Z","modified":"2023-11-08T04:00:16.998262Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-177"],"updated_at":"2026-11-02T15:46:38.911014Z"}]}}