CVE-2018-3735: Bracket template Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-488m-6gh8-9j36
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2018-3735 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Bracket template libraries in the npm ecosystem. The issue involves bracket-template vulnerable to reflected xss. Remediation is available in the latest vendor maintenance releases.

CVE-2018-3735 at a Glance

CVE Identifier CVE-2018-3735
GHSA Identifier GHSA-488m-6gh8-9j36
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Bracket template
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2018-3735

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

bracket-template fixed: Latest secure release 
npm install bracket-template@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 bracket-template

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-3735, inspect your project dependencies using npm:

npm ls bracket-template

Analyze the terminal output to locate any version of Bracket template 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 bracket-template 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 Bracket template, 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

bracket-template suffers from reflected XSS possible when variable passed via GET parameter is used in template

CVE-2018-3735 Affected Bracket template Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
bracket-template
npm/bracket-template
npm
≤ 1.1.5

References

NVD — CVE-2018-3735 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-3735
hackerone.com/reports/317125 WEB
https://hackerone.com/reports/317125
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-488m-6gh8-9j36

Frequently Asked Questions

What is CVE-2018-3735?
CVE-2018-3735 is a security vulnerability in Bracket template involving bracket-template vulnerable to reflected XSS under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Bracket template versions are affected?
Affected versions include releases prior to current release patches across affected packages: bracket-template.
What version fixes CVE-2018-3735?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is bracket-template affected?
Yes, bracket-template 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-2018-3735?
CVE-2018-3735 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2018-3735?
CVE-2018-3735 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 CVE-2018-3735?
Run the dependency tree command: 'npm ls bracket-template'. 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-488m-6gh8-9j36",
  "modified" : "2023-09-11T22:24:31Z",
  "published" : "2018-07-27T17:05:06Z",
  "aliases" : [ "CVE-2018-3735" ],
  "summary" : "bracket-template vulnerable to reflected XSS",
  "details" : "bracket-template suffers from reflected XSS possible when variable passed via GET parameter is used in template",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "bracket-template"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-3735"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/317125"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-488m-6gh8-9j36"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:57:50Z",
    "nvd_published_at" : "2018-06-07T02:29:00Z"
  }
}