Vulnerabilities in pkg:npm/static-server

PACKAGE
Advisory Identifier: GHSA-v834-rhv4-65m3
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Advisory Summary

CVE-2023-26152 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Static server libraries in the npm ecosystem. The issue involves static-server path traversal vulnerability. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/static-server

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/static-server. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-v834-rhv4-65m3 CVE-2023-26152 HIGH static-server Path Traversal vulnerability

CVE-2023-26152 at a Glance

CVE Identifier CVE-2023-26152
GHSA Identifier GHSA-v834-rhv4-65m3
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Static server
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2023-26152

To remediate this vulnerability, upgrade all affected Static server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

static-server fixed: Latest secure release 
npm install static-server@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls static-server

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-26152, inspect your project dependencies using npm:

npm ls static-server

Analyze the terminal output to locate any version of Static server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls static-server command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Static server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

All versions of the package static-server are vulnerable to Directory Traversal due to improper input sanitization passed via the `validPath` function of server.js.

CVE-2023-26152 Affected Static server Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
static-server
npm/static-server
npm
≤ 2.2.1

References

NVD — CVE-2023-26152 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-26152
Static server Source Repository REPOSITORY
https://gist.github.com/lirantal/1f7021703a2065ecaf9ec9e06a3a346d
Static server Source Repository REPOSITORY
https://github.com/nbluis/static-server
Static server Source Repository REPOSITORY
https://github.com/nbluis/static-server/blob/master/server.js#L218-L223
Static server Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-STATICSERVER-5722341

Frequently Asked Questions

What is CVE-2023-26152?
CVE-2023-26152 is a security vulnerability in Static server involving static-server Path Traversal vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Static server versions are affected?
Affected versions include releases prior to current release patches across affected packages: static-server.
What version fixes CVE-2023-26152?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is static-server affected?
Yes, static-server is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-26152?
CVE-2023-26152 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-26152?
CVE-2023-26152 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2023-26152?
Run the dependency tree command: 'npm ls static-server'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-v834-rhv4-65m3",
  "modified" : "2025-09-26T21:39:29Z",
  "published" : "2023-10-03T06:30:26Z",
  "aliases" : [ "CVE-2023-26152" ],
  "summary" : "static-server Path Traversal vulnerability",
  "details" : "All versions of the package static-server are vulnerable to Directory Traversal due to improper input sanitization passed via the `validPath` function of server.js.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "static-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-26152"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/lirantal/1f7021703a2065ecaf9ec9e06a3a346d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nbluis/static-server"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nbluis/static-server/blob/master/server.js#L218-L223"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-STATICSERVER-5722341"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-04T14:43:33Z",
    "nvd_published_at" : "2023-10-03T05:15:50Z"
  }
}