CVE-2026-73035 npm-check-updates 23.0.2 Terminal Injection via Unsanitized Escape Sequences
Attackers can inject terminal escape sequences via package metadata, allowing output manipulation when developers use specific formatting options.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-73035?
CVE-2026-73035 is a medium-severity vulnerability in raineorshine npm-check-updates, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-150
Which versions are affected by CVE-2026-73035?
How do I fix CVE-2026-73035?
No fix has been published for CVE-2026-73035 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73035 being exploited?
There is no known exploitation of CVE-2026-73035 in the wild and no public exploit code.
Sources
Also known as GHSA-xm8c-hvjf-c5q9.