CVE-2025-1098 ingress-nginx controller - configuration injection via unsanitized mirror annotations
Attackers can inject arbitrary nginx configuration via unsanitized mirror annotations, leading to code execution and secret disclosure in the ingress-nginx controller.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-1098?
CVE-2025-1098 is a high-severity code injection vulnerability in kubernetes ingress-nginx, published on 24 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.)
Weakness: CWE-20
Which versions are affected by CVE-2025-1098?
5 open source packages ship an affected version, including k8s.io/ingress-nginx.
| Package | Affected | Fixed in |
|---|---|---|
k8s.io/ingress-nginx Go | All versions | None |
k8s.io/ingress-nginx Go | All versions | 1.11.5 |
k8s.io/ingress-nginx Go | All versions | 1.11.5 |
k8s.io/ingress-nginx Go | From 1.12.0-beta.0 | 1.12.1 |
k8s.io/ingress-nginx Go | From 1.12.0-beta.0 | 1.12.1 |
How do I fix CVE-2025-1098?
Upgrade k8s.io/ingress-nginx to a fixed version for your release line: 1.11.5 or 1.12.1.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-1098 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-1098 exists.
Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.
Sources
Also known as GHSA-vg63-w3p9-jc9m, GO-2025-3568, MINI-4fqr-hxgc-f7x6, MINI-4g73-6j37-whpq, MINI-5wgg-qm6w-pcwc, MINI-5xqr-vmqm-7pmx and 6 more.