CVE-2025-1098: ingress-nginx controller - configuration injection via unsanitized mirror annotations
Description
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.)
Classification
CVE ID: CVE-2025-1098
CVSS Base Severity: HIGH
CVSS Base Score: 8.8
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types
CWE-20 Improper Input ValidationAffected Products
Vendor: kubernetes
Product: ingress-nginx
Nuclei Template
http/cves/2025/CVE-2025-1098.yaml
Exploit Prediction Scoring System (EPSS)
EPSS Score: 26.45% (probability of being exploited)
EPSS Percentile: 95.97% (scored less or equal to compared to others)
EPSS Date: 2025-04-22 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-1098https://github.com/kubernetes/kubernetes/issues/131008