// For flags

CVE-2026-4342

ingress-nginx comment-based nginx configuration injection

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)

Se descubrió un problema de seguridad en ingress-nginx donde una combinación de anotaciones de Ingress puede utilizarse para inyectar configuración en nginx. Esto puede conducir a la ejecución de código arbitrario en el contexto del controlador ingress-nginx, y a la divulgación de Secrets accesibles para el controlador. (Tenga en cuenta que en la instalación predeterminada, el controlador puede acceder a todos los Secrets a nivel de clúster.)

*Credits: wooseokdotkim
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2026-03-17 CVE Reserved
  • 2026-03-19 CVE Published
  • 2026-03-21 CVE Updated
  • 2026-03-25 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
  • CAPEC-176: Configuration/Environment Manipulation
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Kubernetes
Search vendor "Kubernetes"
 Ingress-nginx
Search vendor "Kubernetes" for product "Ingress-nginx"
 < 1.13.9
Search vendor "Kubernetes" for product "Ingress-nginx" and version " < 1.13.9"
en
Affected
Kubernetes
Search vendor "Kubernetes"
 Ingress-nginx
Search vendor "Kubernetes" for product "Ingress-nginx"
 < 1.14.5
Search vendor "Kubernetes" for product "Ingress-nginx" and version " < 1.14.5"
en
Affected
Kubernetes
Search vendor "Kubernetes"
 Ingress-nginx
Search vendor "Kubernetes" for product "Ingress-nginx"
 < 1.15.1
Search vendor "Kubernetes" for product "Ingress-nginx" and version " < 1.15.1"
en
Affected