Improper Input Validation Affecting github.com/kubernetes/ingress-nginx/internal/ingress/annotations/authreq package, versions <1.13.7>=1.14.0 <1.14.3>=2.0.0 <4.13.7>=4.14.0 <4.14.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMKUBERNETESINGRESSNGINXINTERNALINGRESSANNOTATIONSAUTHREQ-15202035
- published4 Feb 2026
- disclosed3 Feb 2026
- creditUnknown
Introduced: 3 Feb 2026
CVE-2026-1580 Â (opens in a new tab)How to fix?
Upgrade github.com/kubernetes/ingress-nginx/internal/ingress/annotations/authreq to version 1.13.7, 1.14.3, 4.13.7, 4.14.3 or higher.
Overview
Affected versions of this package are vulnerable to Improper Input Validation via the nginx.ingress.kubernetes.io/auth-method annotation, which allows injection of configuration into nginx. An attacker can execute arbitrary code in the context of the ingress controller and access sensitive Secrets by crafting malicious annotations.
Workaround
This vulnerability can be mitigated by using a validating admission controller to reject Ingress resources with the nginx.ingress.kubernetes.io/auth-method annotation.