CVE-2026-4342A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx.
Updated under an hour ago ()
Does this affect you?
It affects kubernetes nginx_ingress_controller. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.)
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
kubernetes nginx_ingress_controller kubernetes:nginx_ingress_controller | before 1.13.9; from 1.14.0 before 1.14.5; 1.15.0 | NVD |
References
- https://github.com/kubernetes/kubernetes/issues/137893issue-tracking
- http://www.openwall.com/lists/oss-security/2026/03/19/9mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.