CVE-2026-4342

CVE Enrichment

CVSS: 8.8 HIGH
EPSS: 1.48%
EPSS Percentile: 74.05%
CISA KEV: Not listed

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.)

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 20-Mar-2026 05:16
Last Modified: 17-Jun-2026 17:56
EPSS Date: 2026-11-06
CWE: CWE-20

CVSS Vector


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

CNA Products / Version Status

Kubernetes · ingress-nginx Source: CNA · [email protected]
Default status: affected

0 ≤ version < 1.13.9 — affected (semver)
0 ≤ version < 1.14.5 — affected (semver)
0 ≤ version < 1.15.1 — affected (semver)

repo: https://github.com/kubernetes/ingress-nginx

Affected Products / Versions

kubernetes / nginx_ingress_controller Source: NVD CPE · affected
Version / affected range: * · before (exclusive) 1.13.9
cpe:2.3:a:kubernetes:nginx_ingress_controller:*:*:*:*:*:*:*:*
kubernetes / nginx_ingress_controller Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 1.14.0 · before (exclusive) 1.14.5
cpe:2.3:a:kubernetes:nginx_ingress_controller:*:*:*:*:*:*:*:*
kubernetes / nginx_ingress_controller Source: NVD CPE · affected
Version / affected range: 1.15.0
cpe:2.3:a:kubernetes:nginx_ingress_controller:1.15.0:*:*:*:*:*:*:*

References

Last enrichment sync: 07-Nov-2026 09:46
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

RCE), CVE-2026-20131 (Cisco FMC unauthenticated RCE), CVE-2026-33309 (Langflow critical), CVE-2026-4342 (Kubernetes ingress-nginx configuration injection), and CVE-2026-22721 (VMware Aria privilege Cyble Weekly Report Highlights Vulnerabilities Across AI, VMware and ICS

CVE (7)

MITRE ATT&CK (5)

Vendors (8)

Products (10)

Industries (3)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.