CVE-2026-78427 PUBLISHED

Admission Control Bypass via Hardcoded Sidecar Image Exemption

Assigner: suse
Reserved: 24.08.2026 Published: 17.09.2026 Updated: 17.09.2026

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.

Metrics

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

Product Status

Vendor go
Product github.com/neuvector/neuvector
Versions Default: unaffected
  • affected from 0 to v5.6.1 (incl.)

References

Problem Types

  • CWE-807 Reliance on Untrusted Inputs in a Security Decision CWE