Vulnerabilities in pkg:npm/docsify

PACKAGE
Advisory Identifier: GHSA-5h7x-68wj-jhwc
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Advisory Summary

CVE-2021-30074 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Docsify libraries in the npm ecosystem. The issue involves docsify vulnerable to cross-site scripting due to mishandled encoding. Remediation is available by upgrading affected packages to version 4.12.2.

3 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/docsify

3 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-5h7x-68wj-jhwc CVE-2021-30074 MODERATE Docsify vulnerable to cross-site scripting due to mishandled encoding
GHSA-2mm9-c2fx-c7m4 CVE-2021-23342 MODERATE Docsify XSS Vulnerability
GHSA-qpqh-46qj-vwcw CVE-2020-7680 MODERATE Cross-site Scripting in docsify

CVE-2021-30074 at a Glance

CVE Identifier CVE-2021-30074
GHSA Identifier GHSA-5h7x-68wj-jhwc
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 Docsify
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-2021-30074

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

docsify fixed: 4.12.2 
npm install docsify@4.12.2
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 docsify

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-30074, inspect your project dependencies using npm:

npm ls docsify

Analyze the terminal output to locate any version of Docsify in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.12.2), your application is affected.

Note: The npm ls docsify 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 Docsify, 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

docsify versions 4.12.1 and earlier are vulnerable to cross-site scripting (XSS) because the search component does not appropriately encode Code Blocks and mishandles the `"` character.

CVE-2021-30074 Affected Docsify Versions

1 component(s)
Fixed Versions:
4.12.2
Product / Package Ecosystem Affected Versions Fixed Version
docsify
npm/docsify
npm
< 4.12.2
4.12.2

References

NVD — CVE-2021-30074 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30074
Docsify Source Repository REPOSITORY
https://github.com/docsifyjs/docsify/issues/1549
Docsify Source Repository REPOSITORY
https://github.com/docsifyjs/docsify/pull/1551
Security Fix Commit FIX COMMIT
https://github.com/docsifyjs/docsify/commit/c24f7f6f0b87a87f6dd3755f69eb0969ebb029c9
Docsify Source Repository REPOSITORY
https://github.com/docsifyjs/docsify

Frequently Asked Questions

What is CVE-2021-30074?
CVE-2021-30074 is a security vulnerability in Docsify involving Docsify vulnerable to cross-site scripting due to mishandled encoding under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Docsify versions are affected?
Affected versions include releases prior to 4.12.2 across affected packages: docsify.
What version fixes CVE-2021-30074?
Upgrading to 4.12.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is docsify affected?
Yes, docsify is affected in releases prior to 4.12.2. Upgrade your dependency to 4.12.2 or later.
What is the CVSS score of CVE-2021-30074?
CVE-2021-30074 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-2021-30074?
CVE-2021-30074 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-2021-30074?
Run the dependency tree command: 'npm ls docsify'. 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-5h7x-68wj-jhwc",
  "modified" : "2023-10-19T18:36:33Z",
  "published" : "2022-05-24T17:46:27Z",
  "aliases" : [ "CVE-2021-30074" ],
  "summary" : "Docsify vulnerable to cross-site scripting due to mishandled encoding",
  "details" : "docsify versions 4.12.1 and earlier are vulnerable to cross-site scripting (XSS) because the search component does not appropriately encode Code Blocks and mishandles the `\"` character.",
  "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" : "docsify"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.12.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.12.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-30074"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docsifyjs/docsify/issues/1549"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docsifyjs/docsify/pull/1551"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/docsifyjs/docsify/commit/c24f7f6f0b87a87f6dd3755f69eb0969ebb029c9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/docsifyjs/docsify"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-19T18:36:33Z",
    "nvd_published_at" : "2021-04-02T21:15:00Z"
  }
}