CVE-2026-78427

Admission Control Bypass via Hardcoded Sidecar Image Exemption

State
Published
Severity
5.3 Medium
Published
Sep 17, 2026
Updated
Sep 28, 2026
Reserved
Aug 24, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.05.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:Nsuse

Weaknesses

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

Affected Products

ProductVersions
github.com/neuvector/neuvectorSUSE
  • v5.6.1 and earlierAffectedfrom 5.6.2Not affectedfrom 5.5.4Not affectedfrom 5.4.11Not affected

References

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