CVE-2026-73035: npm-check-updates 23.0.2 Terminal Injection via Unsanitized Escape Sequences
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
npm-check-updatesto a version that resolves this vulnerability.Fixed in 23.0.2Patch b554b84
Event History
Frequently Asked Questions
What is the severity of CVE-2026-73035?
CVE-2026-73035 has a medium severity rating of 4.3.
How do I fix CVE-2026-73035?
To fix CVE-2026-73035, update npm-check-updates to version 23.0.3 or later.
What is the nature of the vulnerability in CVE-2026-73035?
CVE-2026-73035 allows for terminal escape sequence injection via unsanitized input in package.json files.
Who is affected by CVE-2026-73035?
Users of npm-check-updates versions up to 23.0.2 are affected by CVE-2026-73035.
When was CVE-2026-73035 published?
CVE-2026-73035 was published on August 10, 2026.