Vulnerability in Raineorshine Npm-Check-Updates
CVE-2026-73035
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Raineorshine Npm-Check-Updates — versions 0, b554b84848fc0b08a9d2b3d3db15e351387168cf
Weakness classification (CWE)
References
- github.com/raineorshine/npm-check-updates/issues/1988 (technical-description)
- github.com/raineorshine/npm-check-updates/pull/1994 (issue-tracking)
- github.com/raineorshine/npm-check-updates/commit/b554b84848fc0b08a9d2b3d3db15e3… (patch)
- www.vulncheck.com/advisories/npm-check-updates-terminal-injection-via-unsanitiz… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73035?
- CVE-2026-73035 is a medium-severity vulnerability in Raineorshine Npm-Check-Updates, classified under CWE-150. CVSS score: 4.3/10. Published 2026-08-10.
- How severe is CVE-2026-73035?
- Medium severity. CVSS v3 base score is 4.3 out of 10.