CVE-2026-4342
ingress-nginx comment-based nginx configuration injection
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
12th
A security issue was discovered in ingress-nginx where a combination of Ingress annotations 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.)
| CWE | CWE-20 |
| Vendor | kubernetes |
| Product | ingress-nginx |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 19, 2026 |
| Last Updated | Mar 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Kubernetes / ingress-nginx
0 < 1.13.9 0 < 1.14.5 0 < 1.15.1
References
Credits
wooseokdotkim