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CVE-2026-4342

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CVE-2026-4342

Published: Mar 19, 2026

Modified: Mar 21, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

Description

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.)

VendorProductVersions

Kubernetes

ingress-nginx

affected
0 - < 1.13.9
affected
0 - < 1.14.5
affected
0 - < 1.15.1

Weaknesses (CWE)

CWE-20

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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