CVE-2025-1097
ingress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
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.)
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
ingress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
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.)
- Record
CVE-2025-1097- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-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.)
- Record
EUVD-2025-8034- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-823x-fv5p-h7hw
ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
A security issue was discovered in 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.)
- Record
GHSA-823x-fv5p-h7hw- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-15, CWE-20
- Updated
- 2026-11-02
NVD
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.)
- Record
CVE-2025-1097- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
ingress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
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.)
- Record
CVE-2025-1097- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVGHSA-823x-fv5p-h7hw
ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
A security issue was discovered in 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.)
- Record
GHSA-823x-fv5p-h7hw- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-15, CWE-20
- Updated
- 2026-11-02
OSVGO-2025-3565 No score
ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation in k8s.io/ingress-nginx
ngress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation in k8s.io/ingress-nginx.
NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.
(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)
The additional affected modules and versions are: k8s.io/ingress-nginx before v1.11.5, from v1.12.0-beta.0 before v1.12.1.
- Record
GO-2025-3565- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:14937-1 No score
govulncheck-vulndb-0.0.20250327T184518-1.1 on GA media
These are all security issues fixed in the govulncheck-vulndb-0.0.20250327T184518-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:14937-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
k8s.io/ingress-nginxGo |
before 1.11.5 | 1.11.5 |
k8s.io/ingress-nginxGo |
1.12.0-beta.0 up to 1.12.1 | 1.12.1 |
k8s.io/ingress-nginxGo |
All versions | None known |
govulncheck-vulndbopenSUSE:Tumbleweed From an advisory covering 30 CVEs |
before 0.0.20250327T184518-1.1 | 0.0.20250327T184518-1.1 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | hakaioffsec/IngressNightmare-PoC | 2025-03-26 |
| PoC in GitHub | lufeirider/IngressNightmare-PoC | 2025-03-30 |
| Exploit-DB | Ingress-NGINX Admission Controller v1.11.1 - FD Injection to RCE | 2026-02-04 |
| Nuclei | Ingress-Nginx Controller - Configuration Injection via Unsanitized `auth-tls-match-cn` Annotation |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, exploits, facts | ||
| first indexed | CVE List, EUVD, Exploit-DB, GitHub Advisories, Nuclei, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-1097 is a high vulnerability (CVSS 8.8) in Kubernetes Ingress-nginx, published March 24, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 37.0%, the 98th percentile. Fixed in k8s.io/ingress-nginx 1.11.5.
References
github.com/kubernetes/kubernetes/issues/131007
security.netapp.com/advisory/ntap-20250328-0008
exploit-db.com/exploits/52475
nvd.nist.gov/vuln/detail/CVE-2025-1097
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groups.google.com/g/kubernetes-security-announce/c/2qa9DFtN0cQ
lists.opensuse.org/archives/list/[email protected]/thread/NEVFAGUWHTVZSJTUAIU6C4S26DP2KIGB
suse.com/security/cve/CVE-2024-25132