CVE-2021-21267: Netapp E-Series Performance Analyzer

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector). In before version 2.0.0, email address validation is vulnerable to a denial-of-service attack where some input (for example `a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.`) will freeze the program or web browser page executing the code. This affects any current schema-inspector users using any version to validate email addresses. Users who do not do email validation, and instead do other types of validation (like string min or max length, etc), are not affected. Users should upgrade to version 2.0.0, which uses a regex expression that isn't vulnerable to ReDoS.

Affected products

• Netapp E-Series Performance Analyzer: affected versions not specified
• Netapp Oncommand Insight: affected versions not specified
• Schema-Inspector Project Schema-Inspector: before 2.0.0 (fixed in 2.0.0)

Published 2021-03-19. Last modified 2026-06-17.