ingress-nginx comment-based nginx configuration injection
Published Mar 19, 2026
8.8
HIGHCVSS 3.1
EPSS 0.60%
Description
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.)
Affected products
-
- Version 0StatusaffectedConstraints<1.13.9
- Version 0StatusaffectedConstraints<1.14.5
- Version 0StatusaffectedConstraints<1.15.1
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kubernetes | Ingress-Nginx | affected |
|
- < 1.13.9
- ≥ 1.14.0 · < 1.14.5
- 1.15.0
No data.
No Red Hat product state for this CVE.
k8s.io/ingress-nginx
Go
Introduced 0 Fixed 0.0.0-20260319175635-5183b7d86137
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | k8s.io/ingress-nginx | 0 | 0.0.0-20260319175635-5183b7d86137 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Mar 20, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Mar–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.60% (0.00604) | 47.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.49% (0.01494) | 70.71th | v5 (v2026.06.15) |
| Mar 20, 2026 | 0.04% (0.00040) | 11.76th | v4 (v2025.03.14) |
References (5)
- http://www.openwall.com/lists/oss-security/2026/03/19/9 Mailing ListThird Party Advisory
- https://github.com/advisories/GHSA-f53h-mxv9-cp98 Advisory
- https://github.com/kubernetes/ingress-nginx/commit/5183b7d861377a9a2f6d2acaf44f8f6abd5cd0aa
- https://github.com/kubernetes/kubernetes/issues/137893 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2026-4342
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/03/19/9 | Mailing ListThird Party Advisory | |
| https://github.com/advisories/GHSA-f53h-mxv9-cp98 | Advisory | |
| https://github.com/kubernetes/ingress-nginx/commit/5183b7d861377a9a2f6d2acaf44f8f6abd5cd0aa | ||
| https://github.com/kubernetes/kubernetes/issues/137893 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-4342 |
Change history (0)
No recorded changes yet.