CVE-2026-73035: Raineorshine Npm-Check-Updates

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

npm-check-updates through 23.0.2, fixed in commit b554b84, contains a terminal escape sequence injection vulnerability that allows an attacker to embed arbitrary terminal control characters in a dependency's package.json homepage or repository URL fields. When a developer runs ncu with the --format homepage or --format repo option, unfiltered escape sequences are written directly to the terminal, enabling malicious output manipulation or other terminal-dependent effects.

Affected products

• Raineorshine Npm-Check-Updates: up to and including 23.0.2

Published 2026-08-10. Last modified 2026-09-24.