GHSA-f8rq-m28h-8hxj: Htmr Cross-Site Scripting Vulnerability

HIGH
Share
CWE-79
Published
Advisory Summary

GHSA-f8rq-m28h-8hxj is a HIGH cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Htmr libraries in the npm ecosystem. The issue involves cross-site scripting in htmr. Remediation is available by upgrading affected packages to version 0.8.7.

GHSA-f8rq-m28h-8hxj at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-f8rq-m28h-8hxj
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Htmr
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-f8rq-m28h-8hxj

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

htmr fixed: 0.8.7 
npm install htmr@0.8.7
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 htmr

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-f8rq-m28h-8hxj, inspect your project dependencies using npm:

npm ls htmr

Analyze the terminal output to locate any version of Htmr in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.8.7), your application is affected.

Note: The npm ls htmr 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 Htmr, 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 `htmr` prior to 0.8.7 are vulnerable to Cross-Site Scripting (XSS). The package uses `innerHTML` to unescape HTML entities. This may lead to [DOM-based XSS](https://owasp.org/www-community/attacks/DOM_Based_XSS) through HTML-encoded XSS payloads. This may allow an attacker to execute arbitrary JavaScript in a victim's browser. ## Recommendation Upgrade to version 0.8.7 or later.

GHSA-f8rq-m28h-8hxj Affected Htmr Versions

1 component(s)
Fixed Versions:
0.8.7
Product / Package Ecosystem Affected Versions Fixed Version
htmr
npm/htmr
npm
< 0.8.7
0.8.7

References

hackerone.com/reports/753971 WEB
https://hackerone.com/reports/753971
www.npmjs.com/advisories/1496 WEB
https://www.npmjs.com/advisories/1496

Frequently Asked Questions

What is GHSA-f8rq-m28h-8hxj?
GHSA-f8rq-m28h-8hxj is a security vulnerability in Htmr involving Cross-Site Scripting in htmr under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Htmr versions are affected?
Affected versions include releases prior to 0.8.7 across affected packages: htmr.
What version fixes GHSA-f8rq-m28h-8hxj?
Upgrading to 0.8.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is htmr affected?
Yes, htmr is affected in releases prior to 0.8.7. Upgrade your dependency to 0.8.7 or later.
What CWE is associated with GHSA-f8rq-m28h-8hxj?
GHSA-f8rq-m28h-8hxj 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-f8rq-m28h-8hxj?
Run the dependency tree command: 'npm ls htmr'. 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-f8rq-m28h-8hxj",
  "modified" : "2020-08-31T19:01:22Z",
  "published" : "2020-09-03T15:50:29Z",
  "aliases" : [ ],
  "summary" : "Cross-Site Scripting in htmr",
  "details" : "Versions of `htmr` prior to 0.8.7 are vulnerable to Cross-Site Scripting (XSS).  The package uses `innerHTML` to unescape HTML entities. This may lead to [DOM-based XSS](https://owasp.org/www-community/attacks/DOM_Based_XSS) through HTML-encoded XSS payloads. This may allow an attacker to execute arbitrary JavaScript in a victim's browser.\n\n\n## Recommendation\n\nUpgrade to version 0.8.7 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "htmr"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/753971"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1496"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T19:01:22Z",
    "nvd_published_at" : null
  }
}