CVE-2017-16123
Directory Traversal in welcomyzt
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2017-16123- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2017-16123- Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2020-0886 No score
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.
- Record
EUVD-2020-0886- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8fv7-vm2p-5495
Directory Traversal in welcomyzt
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.
Example request:
GET /../../../../../../../../../../etc/passwd HTTP/1.1
host: localhost
and server Response:
HTTP/1.1 200 OK
Date: Thu, 04 May 2017 23:59:18 GMT
Connection: keep-alive
Transfer-Encoding: chunked
{contents of /etc/passwd}
Recommendation
No patch is available for this vulnerability.
It 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.
- Record
GHSA-8fv7-vm2p-5495- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVGHSA-8fv7-vm2p-5495
Directory Traversal in welcomyzt
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.
Example request:
GET /../../../../../../../../../../etc/passwd HTTP/1.1
host: localhost
and server Response:
HTTP/1.1 200 OK
Date: Thu, 04 May 2017 23:59:18 GMT
Connection: keep-alive
Transfer-Encoding: chunked
{contents of /etc/passwd}
Recommendation
No patch is available for this vulnerability.
It 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.
- Record
GHSA-8fv7-vm2p-5495- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
welcomyztnpm |
0.0.0 and later | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-16123 is a high vulnerability (CVSS 7.5) in Welcomyzt Project Welcomyzt, published June 7, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.97%, the 80th percentile. No source names a fixed version.