Vulnerability in Go Github.com/neuvector/neuvector

CVE-2026-78427

The NeuVector admission webhook silently excludes containers from policy evaluation when their image path matches one of three hardcoded service mesh sidecar images. Since the image path is entirely controlled by the workload author, any user capable of deploying workloads can evade admission deny rules simply by naming their image path after one of these sidecar images.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-78427?
CVE-2026-78427 is a medium-severity vulnerability in Go Github.com/neuvector/neuvector, classified under CWE-807. CVSS score: 4.3/10. Published 2026-09-17.
How severe is CVE-2026-78427?
Medium severity. CVSS v3 base score is 4.3 out of 10.