Digest · Tuesday
Security digest: January 6, 2026
2 critical advisories.
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Take stock
- npm: 1 critical advisory (
n8n). Check withnpm audit (or: npm ls <package>). - Go: 1 critical advisory (
github.com/kyverno/kyverno). Check withgovulncheck ./.... - None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.
Known exploited (CISA KEV) 0
Added to CISA’s catalog on this day: confirmed exploitation in the wild. Due date = CISA’s deadline for US federal agencies.
None.
Critical advisories by ecosystem 2
GitHub-reviewed advisories rated critical, published this day (Pacific time).
Go 1
Check: govulncheck ./...
- Bypassing Kyverno Policies via Double Policy Exceptions GHSA-gg4x-fgg2-h9w9 CVSS 9.0 Critical
github.com/kyverno/kyverno>= 1.9.0, <= 1.12.7 → fixed in 1.13.0
npm 1
Check: npm audit (or: npm ls <package>)
- n8n Vulnerable to RCE via Arbitrary File Write CVE-2026-21877 CVSS 9.9 Critical
n8n>= 0.123.0, < 1.121.3 → fixed in 1.121.3