CVE-2026-4342

HIGH

8.8

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.)

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/19/2026

Last Modified3/20/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-20

References

https://github.com/kubernetes/kubernetes/issues/137893(jordan@liggitt.net)

http://www.openwall.com/lists/oss-security/2026/03/19/9(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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