GHSA-cpgr-wmr9-qxv4: Serve Cross-Site Scripting Vulnerability

MODERATE
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CWE-79
Published
Advisory Summary

GHSA-cpgr-wmr9-qxv4 is a MODERATE cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Serve libraries in the npm ecosystem. The issue involves cross-site scripting in serve. Remediation is available by upgrading affected packages to version 10.0.2.

GHSA-cpgr-wmr9-qxv4 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-cpgr-wmr9-qxv4
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Serve
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-cpgr-wmr9-qxv4

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

serve fixed: 10.0.2 
npm install serve@10.0.2
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 serve

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-cpgr-wmr9-qxv4, inspect your project dependencies using npm:

npm ls serve

Analyze the terminal output to locate any version of Serve in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.0.2), your application is affected.

Note: The npm ls serve 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Serve, 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

Versions of `serve` prior to 10.0.2 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize filenames, allowing attackers to execute arbitrary JavaScript in the victim's browser through files with names containing malicious code. ## Recommendation Upgrade to version 10.0.2 or later.

GHSA-cpgr-wmr9-qxv4 Affected Serve Versions

1 component(s)
Fixed Versions:
10.0.2
Product / Package Ecosystem Affected Versions Fixed Version
serve
npm/serve
npm
< 10.0.2
10.0.2

References

hackerone.com/reports/398285 WEB
https://hackerone.com/reports/398285
www.npmjs.com/advisories/992 WEB
https://www.npmjs.com/advisories/992

Frequently Asked Questions

What is GHSA-cpgr-wmr9-qxv4?
GHSA-cpgr-wmr9-qxv4 is a security vulnerability in Serve involving Cross-Site Scripting in serve under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Serve versions are affected?
Affected versions include releases prior to 10.0.2 across affected packages: serve.
What version fixes GHSA-cpgr-wmr9-qxv4?
Upgrading to 10.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is serve affected?
Yes, serve is affected in releases prior to 10.0.2. Upgrade your dependency to 10.0.2 or later.
What CWE is associated with GHSA-cpgr-wmr9-qxv4?
GHSA-cpgr-wmr9-qxv4 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check npm dependencies for GHSA-cpgr-wmr9-qxv4?
Run the dependency tree command: 'npm ls serve'. 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-cpgr-wmr9-qxv4",
  "modified" : "2020-08-31T18:43:20Z",
  "published" : "2020-09-11T21:20:14Z",
  "aliases" : [ ],
  "summary" : "Cross-Site Scripting in serve",
  "details" : "Versions of `serve` prior to 10.0.2 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize filenames, allowing attackers to execute arbitrary JavaScript in the victim's browser through files with names containing malicious code.\n\n\n## Recommendation\n\nUpgrade to version 10.0.2 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "serve"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/398285"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/992"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:43:20Z",
    "nvd_published_at" : null
  }
}