shell-quote: `quote()` command injection via a line terminator in a token after a `{ comment }` token

Date Oct 6, 2026
Type Vendor advisory
Signal Critical vendor advisory
Vendor / Product npm ยท shell-quote
CVE CVE-2026-102422
Critical vendor advisory CVE-2026-102422

Summary

shell-quote: `quote()` command injection via a line terminator in a token after a `{ comment }` token

Why it matters

GitHub has published a reviewed security advisory for shell-quote. Prioritize it with other application dependency updates, especially because EPSS places it in the 30% percentile.

Operator check

Check whether shell-quote is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.2. EPSS probability: 0.4%; percentile: 30%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.