Medium 5.3Published Sep 17, 2026

CVE-2026-78427Admission Control Bypass via Hardcoded Sidecar Image Exemption

Updated under an hour ago (2026-10-19 08:40 UTC)

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It affects SUSE github.com/neuvector/neuvector. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for SUSE github.com/neuvector/neuvector

Exploited in the last 30 days

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: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-807
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: suse
NVD analysis: Awaiting Analysis
Record last updated: Sep 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

SUSE github.com/neuvector/neuvector suse:github.com_neuvector_neuvector (from the name)	through v5.6.1; fixed at 5.6.2, fixed at 5.5.4, fixed at 5.4.11	CNA record

References

https://github.com/neuvector/neuvector/security/advisories/GHSA-78r4-3wfq-r2xm
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78427

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.