Description
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.)
Published: 2025-03-24
Score: 8.8 High
EPSS: 66.9% High
KEV: No
Impact: n/a
Action: n/a
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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-8034 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.)
Github GHSA Github GHSA GHSA-823x-fv5p-h7hw ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
History

Thu, 26 Feb 2026 23:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 04 Feb 2026 20:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Wed, 28 May 2025 17:15:00 +0000

Type Values Removed Values Added
References

Thu, 22 May 2025 03:00:00 +0000


Wed, 26 Mar 2025 02:15:00 +0000


Tue, 25 Mar 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 24 Mar 2025 23:45:00 +0000

Type Values Removed Values Added
Description 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.)
Title ingress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Kubernetes Ingress-nginx
cve-icon MITRE

Status: PUBLISHED

Assigner: kubernetes

Published:

Updated: 2026-02-26T19:09:14.028Z

Reserved: 2025-02-07T00:11:49.551Z

Link: CVE-2025-1097

cve-icon Vulnrichment

Updated: 2026-02-04T19:36:15.102Z

cve-icon NVD

Status : Deferred

Published: 2025-03-25T00:15:13.590

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-1097

cve-icon Redhat

Severity :

Publid Date: 2025-03-24T23:29:05Z

Links: CVE-2025-1097 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T15:26:26Z

Weaknesses