CVE-2026-93749 (High) detected in source-map-js-0.6.2.tgz

[mend-bolt-for-github]

CVE-2026-93749 - High Severity Vulnerability

Vulnerable Library - source-map-js-0.6.2.tgz

Generates and consumes source maps

Library home page: https://registry.npmjs.org/source-map-js/-/source-map-js-0.6.2.tgz

Sample Path to Dependency File: /package.json

Path to vulnerable library: /node_modules/source-map-js/package.json

Dependency Hierarchy:

• build-angular-13.0.3.tgz (Root Library)
  • postcss-8.3.11.tgz
    • ❌ source-map-js-0.6.2.tgz (Vulnerable Library)

Found in HEAD commit: 977ea6ccaaf2045985ee40cacd5f6d676fa1a047

Found in base branch: master

Vulnerability Details

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the service from handling other requests.

Publish Date: 2026-09-18

URL: CVE-2026-93749

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.

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