SB2026031120 - Remote code execution in Ingress-NGINX Controller for Kubernetes
Published: March 11, 2026
Security Bulletin ID
SB2026031120
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Code Injection (CVE-ID: CVE-2026-3288)
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation where the "nginx.ingress.kubernetes.io/rewrite-target" Ingress annotation can be used to inject configuration into nginx. A remote user can inject and execute arbitrary code in the context of the ingress-nginx controller.
Remediation
Install update from vendor's website.