CVE-2026-4342HIGH 8.8EPSS p70.8%

CVE-2026-4342CVE-2026-4342

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.)

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS1.49% probability of exploitation · percentile 70.8% · 2026-06-19T12:03:05Z
Published2026-03-19
Last modified2026-05-19

Underlying weaknesses· 1

CWE-20

References

  1. https://github.com/kubernetes/kubernetes/issues/137893
  2. http://www.openwall.com/lists/oss-security/2026/03/19/9

1

TypeTargetConfidenceTier
WeaknessImproper Input Validationcwe-200%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.