CVE-2026-4342

HIGH EPSS 70.9%
Published Mar 19, 20263mo ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published Mar 19, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.)

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
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

Threat Intelligence

EPSS Exploit Probability
70.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 3

VendorProductVersionRange
kubernetesnginx_ingress_controller* <1.13.9
kubernetesnginx_ingress_controller*≥1.14.0  –  <1.14.5
kubernetesnginx_ingress_controller1.15.0any

References 2

  • openwall.com http://www.openwall.com/lists/oss-security/2026/03/19/9
    Mailing ListThird Party Advisory
  • github.com https://github.com/kubernetes/kubernetes/issues/137893
    Issue Tracking

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.