CVE-2025-1097
ingress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
- Published
- Mar 24, 2025
- Updated
- Feb 26, 2026
- Assigning CNA
- kubernetes
- Evidence observed
- Feb 4, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HModerate · next 30 days
- Percentile
- 98.4%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A security issue was discovered in ingress-nginx https://github.com/kubernetes/ingress-nginx where the `auth-tls-match-cn` Ingress annotation 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.)
Sources
- Ingress-Nginx Controller - Configuration Injection via Unsanitized `auth-tls-match-cn` AnnotationTemplate
http/cves/2025/CVE-2025-1097.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: word($.matchers[*].type)
- IngressNightmare-PoCExploit
This is a PoC code to exploit the IngressNightmare vulnerabilities (CVE-2025-1097, CVE-2025-1098, CVE-2025-24514, and CVE-2025-1974).
Responsible use
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