Vulnerabilities in pkg:npm/commonregex

PACKAGE

Advisory Identifier: GHSA-pmvv-57rg-5g86

Advisory Summary

CVE-2020-26305 is a MODERATE (CVSS 7.5) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Commonregex libraries in the npm ecosystem. The issue involves commonregexjs regular expression denial of service vulnerability. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)

Package Vulnerability Intelligence

pkg:npm/commonregex

1 Known Advisory Record(s)

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

Advisory ID	CVE / NVD	Severity	Summary
GHSA-pmvv-57rg-5g86	CVE-2020-26305	MODERATE	CommonRegexJS Regular Expression Denial of Service vulnerability

CVE-2020-26305 at a Glance

CVE Identifier CVE-2020-26305

GHSA Identifier GHSA-pmvv-57rg-5g86

Severity MODERATE

CVSS v3.1 Base Score 7.5

CWE Classification CWE-1333: Inefficient Regular Expression Complexity

Affected Product Commonregex

Package Ecosystem npm

Published Date 2024-10-26

Last Updated 2024-11-13

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:N/I:N/A:H).

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 None (C:N)

Integrity None (I:N)

Availability High (A:H)

How to Fix CVE-2020-26305

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

commonregex fixed: Latest secure release

npm install commonregex@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 commonregex

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-26305, inspect your project dependencies using npm:

npm ls commonregex

Analyze the terminal output to locate any version of Commonregex 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 commonregex 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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Commonregex, 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

CommonRegexJS is a CommonRegex port for JavaScript. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.

CVE-2020-26305 Affected Commonregex Versions

1 component(s)

Product / Package	Ecosystem	Affected Versions	Fixed Version
commonregex npm/commonregex	npm	≤ 0.3.1

References

NVD — CVE-2020-26305 NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-26305

Commonregex Source Repository REPOSITORY

https://github.com/talyssonoc/CommonRegexJS/issues/4

Commonregex Source Repository REPOSITORY

https://github.com/talyssonoc/CommonRegexJS

GitHub Advisory / Wiki ADVISORY

https://securitylab.github.com/advisories/GHSL-2020-291-redos-CommonRegexJS

Frequently Asked Questions

What is CVE-2020-26305?

CVE-2020-26305 is a security vulnerability in Commonregex involving CommonRegexJS Regular Expression Denial of Service vulnerability under CWE-1333: Inefficient Regular Expression Complexity.

Which Commonregex versions are affected?

Affected versions include releases prior to current release patches across affected packages: commonregex.

What version fixes CVE-2020-26305?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

Is commonregex affected?

Yes, commonregex 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-2020-26305?

CVE-2020-26305 has a CVSS v3.1 base score of 7.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

What CWE is associated with CVE-2020-26305?

CVE-2020-26305 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).

How can I check npm dependencies for CVE-2020-26305?

Run the dependency tree command: 'npm ls commonregex'. 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-pmvv-57rg-5g86",
  "modified" : "2024-11-13T23:24:33Z",
  "published" : "2024-10-26T21:30:46Z",
  "aliases" : [ "CVE-2020-26305" ],
  "summary" : "CommonRegexJS Regular Expression Denial of Service vulnerability",
  "details" : "CommonRegexJS is a CommonRegex port for JavaScript. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "commonregex"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-26305"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/talyssonoc/CommonRegexJS/issues/4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/talyssonoc/CommonRegexJS"
  }, {
    "type" : "ADVISORY",
    "url" : "https://securitylab.github.com/advisories/GHSL-2020-291-redos-CommonRegexJS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-28T14:44:58Z",
    "nvd_published_at" : "2024-10-26T21:15:13Z"
  }
}

CVSS V3

7.5 MODERATE