CVE-2026-67214 (Medium) detected in nanoid-3.1.30.tgz

[mend-bolt-for-github]

CVE-2026-67214 - Medium Severity Vulnerability

Vulnerable Library - nanoid-3.1.30.tgz

A tiny (130 bytes), secure URL-friendly unique string ID generator

Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.1.30.tgz

Sample Path to Dependency File: /package.json

Path to vulnerable library: /node_modules/nanoid/package.json

Dependency Hierarchy:

• build-angular-13.0.3.tgz (Root Library)
  • postcss-8.3.11.tgz
    • ❌ nanoid-3.1.30.tgz (Vulnerable Library)

Found in HEAD commit: 977ea6ccaaf2045985ee40cacd5f6d676fa1a047

Found in base branch: master

Vulnerability Details

nanoid (Nano ID) before 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition.

Publish Date: 2026-07-29

URL: CVE-2026-67214

CVSS 3 Score Details (5.9)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • 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

Release Date: 2026-07-29

Fix Resolution: nanoid - 5.1.16,nanoid - 5.1.16,https://github.com/ai/nanoid.git - 5.1.16

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