Improper input validation in Kubernetes Ingress-Nginx

CVE-2025-1098

A security issue was discovered in ingress-nginx https://github.com/kubernetes/ingress-nginx where the `mirror-target` and `mirror-host` Ingress annotations can be used to inject arbitrary 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.)

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.823 (99.7th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-1098: fell from 0.835 to 0.823.

EPSS over last 30 days · oldest: 0.835 · newest: 0.823 · change: -0.012

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-1098?
CVE-2025-1098 is a high-severity vulnerability in Kubernetes Ingress-Nginx, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2025-03-25.
How severe is CVE-2025-1098?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-1098 known to be exploited?
17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.