CVE-2026-50171 (High) detected in common-12.2.5.tgz

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CVE-2026-50171 - High Severity Vulnerability

Vulnerable Library - common-12.2.5.tgz

Angular - commonly needed directives and services

Library home page: https://registry.npmjs.org/@⁠angular/common/-/common-12.2.5.tgz

Path to dependency file: /package.json

Path to vulnerable library: /package.json

Dependency Hierarchy:

• ❌ common-12.2.5.tgz (Vulnerable Library)

Found in HEAD commit: 36a9c5d28529109984de6fcc3d0a157d561dac4a

Found in base branch: master

Vulnerability Details

A Denial of Service (DoS) vulnerability exists in the "@⁠angular/common" package of Angular. The "formatNumber" function, which is also utilized by "DecimalPipe", "PercentPipe", and "CurrencyPipe", does not properly validate the upper bounds of the "digitsInfo" parameter. Specifically, the minimum and maximum fraction digits parsed from the "digitsInfo" string (e.g., "1.2-4") are converted to integers and used without limits. When parsing a maliciously crafted "digitsInfo" string with excessively large fraction digit values (e.g., "1.200000000-200000000"), the internal "roundNumber" function attempts to pad the digits array to match the requested fraction size. This results in an unbounded loop that repeatedly pushes elements into an array. Impact Successful exploitation of this vulnerability allows an attacker to trigger resource exhaustion, leading to a Denial of Service (DoS): * Server-Side Rendering (SSR): In applications using SSR (e.g., "@⁠angular/ssr"), an attacker can crash the Node.js server process due to a "JavaScript heap out of memory" error. This affects the availability of the application for all users. * Client-Side Rendering (CSR): In standard client-side applications, the unbounded loop will block the main thread, freezing the user's browser tab and making it unresponsive. Attack Preconditions For this vulnerability to be exploitable, the following conditions must be met: 1. Vulnerable Component Usage: The application must use Angular's number formatting utilities, such as the "formatNumber" function directly, or via template pipes ("DecimalPipe", "PercentPipe", "CurrencyPipe"). 2. Attacker-Controlled Parameter: The "digitsInfo" parameter passed to these utilities must be customizable or directly controlled by untrusted user input (e.g., parsed from query parameters, user preference settings, or API responses that accept user-defined formatting options). If "digitsInfo" is trusted or limited to a known, defined range for its value, the vulnerability is not exploitable by external attackers. Patches - 22.0.0-rc.2 - 21.2.15 - 20.3.22 - 19.2.23 Credits This vulnerability was discovered and reported by "CodeMender from Google DeepMind" (https://deepmind.google/blog/introducing-codemender-an-ai-agent-for-code-security/).

Publish Date: 2026-06-15

URL: CVE-2026-50171

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-p3vc-36g9-x9gr

Release Date: 2026-06-15

Fix Resolution: https://github.com/angular/angular.git - v21.2.15,https://github.com/angular/angular.git - v19.2.23,https://github.com/angular/angular.git - v20.3.22

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