Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.2 | Critical | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA (harborist) |
- CISA KEV Not listed.
- EPSS 0.0079, the 56th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
- GitHub Advisory Database: GHSA-w7jw-789q-3m8p
- OSV: GHSA-w7jw-789q-3m8p
- github.com/ljharb/shell-quote/security/advisories/GHSA-w7jw-789q-3m8p
- nvd.nist.gov/vuln/detail/CVE-2026-9277
- github.com/ljharb/shell-quote/commit/1518179
- github.com/ljharb/shell-quote
- www.npmjs.com/package/shell-quote
- www.openwall.com/lists/oss-security/2026/05/23/2