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CVE-2025-15566

ingress-nginx auth-proxy-set-headers nginx configuration injection

Published: Feb 6, 2026Updated: Feb 6, 2026 Sources: CVE List NVD BDUCWE-20
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.5%
Top 63.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/auth-proxy-set-headers` 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.)

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
ingress-nginxThe Kubernetes Authors
Mixed
Cloud & SaaS / container-orchestration
ingress-nginxKubernetesCloud & SaaS
ооо «ред софт»commercialRUOperating Systemsaka red soft
the kubernetes authorsoss-projectCloud & SaaSaka kubernetes
kubernetesoss-projectUSCloud & SaaSaka k8s

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/kubernetes/kubernetes/issues/136789
github.com
https://github.com/kubernetes/kubernetes/issues/136789
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-15566
nvd.nist.gov
and 1 more references View all →

Timeline

Published
Feb 6, 2026
Last Updated
Feb 6, 2026

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