Medium severity · published Sep 17, 2026
CVE-2026-78427
Admission Control Bypass via Hardcoded Sidecar Image Exemption
5.3
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
github.com/neuvector/neuvector · SUSE
through v5.6.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78427
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78427
github.com
https://github.com/neuvector/neuvector/security/advisories/GHSA-78r4-3wfq-r2xm
bugzilla.suse.com
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78427
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