ingress-nginx Admission Controller denial of service
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
A security issue was discovered in ingress-nginx where the validating admission controller feature is subject to a denial of service condition. By sending large requests to the validating admission controller, an attacker can cause memory consumption, which may result in the ingress-nginx controller pod being killed or the node running out of memory.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Kubernetes | ingress-nginx | before 1.13.7; before 1.14.3 | 1.13.7, 1.14.3 | Patch available | CNA |
| — | k8s.io/ingress-nginx (Go) | before 1.13.7 | 1.13.7 | Patch available | GHSA-2pf9-vr92-6h3v |
| — | k8s.io/ingress-nginx (Go) | 1.14.0 to before 1.14.3 | 1.14.3 | Patch available | GHSA-2pf9-vr92-6h3v |
- ingress-nginx VendorKubernetes Affected before 1.13.7; before 1.14.3 Fixed in 1.13.7, 1.14.3 Patch available CNA
- k8s.io/ingress-nginx (Go) Vendor— Affected before 1.13.7 Fixed in 1.13.7 Patch available GHSA-2pf9-vr92-6h3v
- k8s.io/ingress-nginx (Go) Vendor— Affected 1.14.0 to before 1.14.3 Fixed in 1.14.3 Patch available GHSA-2pf9-vr92-6h3v
Remediation
- Fix · CNA ingress-nginx (Kubernetes) Fixed in 1.13.7, 1.14.3
- Fix · GHSA-2pf9-vr92-6h3v k8s.io/ingress-nginx (Go) Fixed in 1.13.7 Advisory →
- Fix · GHSA-2pf9-vr92-6h3v k8s.io/ingress-nginx (Go) Fixed in 1.14.3 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Kubernetes ingress-nginx 1.13.7, 1.14.3
4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-19755 ingress-nginx auth-method nginx configuration injectionPriority MEDIUM 41
- TI-2026-01268 ingress-nginx auth-method nginx configuration injectionPriority MEDIUM 41
- TI-2026-19756 ingress-nginx auth-url protection bypassPriority LOW 15
Timeline
- 2026-10-02 Threatist record created from CVE-2026-24514
- 2026-10-03 Alias added: GHSA-2pf9-vr92-6h3v
References
More Kubernetes vulnerabilities
- TI-2025-01719 ingress-nginx admission controller RCE escalation CVSS 3.1CRITICAL 9.8
- TI-2018-16130 Improper privilege management in Kubernetes CVSS 3.0CRITICAL 9.8
- TI-2025-00932 ingress-nginx controller - configuration injection via unsanitized mirror annotations CVSS 3.1HIGH 8.8
- TI-2019-08418 Kubernetes kubelet exposes /debug/pprof info on healthz port CVSS 3.1HIGH 8.2
- TI-2026-02839 ingress-nginx rewrite-target nginx configuration injection CVSS 3.1HIGH 8.8
- TI-2025-18233 ingress-nginx controller - configuration injection via unsanitized auth-url annotation CVSS 3.1HIGH 8.8
Sources
- CVE-2026-24514 · CVE Program
- CVE-2026-24514 · NVD
- FIRST EPSS
- GHSA-2pf9-vr92-6h3v · GitHub Advisory Database · CC BY 4.0
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