CVE-2022-25844: Angular Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-m2h2-264f-f486
Share
CVSS 5.3
CWE-1333 CWE-770
Published
Advisory Summary

CVE-2022-25844 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Angular libraries in the npm ecosystem. The issue involves angular vulnerable to regular expression denial of service (redos). Remediation is available in the latest vendor maintenance releases.

CVE-2022-25844 at a Glance

CVE Identifier CVE-2022-25844
GHSA Identifier GHSA-m2h2-264f-f486
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Angular
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix CVE-2022-25844

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

angular fixed: Latest secure release 
npm install angular@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 angular

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-25844, inspect your project dependencies using npm:

npm ls angular

Analyze the terminal output to locate any version of Angular 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 angular 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 Angular, 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

AngularJS lets users write client-side web applications. The package angular after 1.7.0 is vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value. **Note:** 1. This package has been deprecated and is no longer maintained. 2. The vulnerable versions are 1.7.0 and higher.

CVE-2022-25844 Affected Angular Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
angular
npm/angular
npm
≥ 1.7.0

References

NVD — CVE-2022-25844 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-25844
Angular Source Repository REPOSITORY
https://github.com/angular/angular.js
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2025/07/msg00005.html
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2WUSPYOTOMAZPDEFPWPSCSPMNODRDKK3
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7LNAKCNTVBIHWAUT3FKWV5N67PQXSZOO
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WUSPYOTOMAZPDEFPWPSCSPMNODRDKK3
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LNAKCNTVBIHWAUT3FKWV5N67PQXSZOO
Angular Security Information SECURITY
https://security.netapp.com/advisory/ntap-20220629-0009
snyk.io/vuln/snyk-java-orgw... WEB
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2772736
snyk.io/vuln/snyk-java-orgw... WEB
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-2772738
snyk.io/vuln/snyk-java-orgw... WEB
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2772737
snyk.io/vuln/snyk-js-angula... WEB
https://snyk.io/vuln/SNYK-JS-ANGULAR-2772735
stackblitz.com/edit/angularjs-mate... WEB
https://stackblitz.com/edit/angularjs-material-blank-zvtdvb

Frequently Asked Questions

What is CVE-2022-25844?
CVE-2022-25844 is a security vulnerability in Angular involving angular vulnerable to regular expression denial of service (ReDoS) under CWE-1333: Inefficient Regular Expression Complexity.
Which Angular versions are affected?
Affected versions include releases prior to current release patches across affected packages: angular.
What version fixes CVE-2022-25844?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is angular affected?
Yes, angular 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-2022-25844?
CVE-2022-25844 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2022-25844?
CVE-2022-25844 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-2022-25844?
Run the dependency tree command: 'npm ls angular'. 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-m2h2-264f-f486",
  "modified" : "2025-11-03T22:29:05Z",
  "published" : "2022-05-03T00:00:44Z",
  "aliases" : [ "CVE-2022-25844" ],
  "summary" : "angular vulnerable to regular expression denial of service (ReDoS)",
  "details" : "AngularJS lets users write client-side web applications. The package angular after 1.7.0 is vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value.\n\n**Note:**\n1. This package has been deprecated and is no longer maintained.\n2. The vulnerable versions are 1.7.0 and higher.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "angular"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.7.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-25844"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/angular/angular.js"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/07/msg00005.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2WUSPYOTOMAZPDEFPWPSCSPMNODRDKK3"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7LNAKCNTVBIHWAUT3FKWV5N67PQXSZOO"
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    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WUSPYOTOMAZPDEFPWPSCSPMNODRDKK3"
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    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LNAKCNTVBIHWAUT3FKWV5N67PQXSZOO"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20220629-0009"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2772736"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBANGULAR-2772738"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2772737"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-ANGULAR-2772735"
  }, {
    "type" : "WEB",
    "url" : "https://stackblitz.com/edit/angularjs-material-blank-zvtdvb"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333", "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-04T20:12:02Z",
    "nvd_published_at" : "2022-05-01T16:15:00Z"
  }
}