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.

CVSS 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-25)

CWE

CWE-150

Published

2026-08-10

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

References

• https://github.com/raineorshine/npm-check-updates/commit/b554b84848fc0b08a9d2b3d3db15e351387168cf
• https://github.com/raineorshine/npm-check-updates/issues/1988
• https://github.com/raineorshine/npm-check-updates/pull/1994
• https://www.vulncheck.com/advisories/npm-check-updates-terminal-injection-via-unsanitized-escape-sequences

Check your stackJSON