CVE-2026-3288ingress-nginx rewrite-target nginx configuration injection
Updated under an hour ago ()
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It affects Kubernetes ingress-nginx and 1 other product. 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 the `nginx.ingress.kubernetes.io/rewrite-target` 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.)
- CVSS
- 8.8 HIGH (v3.1, CNA)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
- kubernetes
- NVD analysis
- Analyzed
- Record last updated
- Apr 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Kubernetes ingress-nginx kubernetes:ingress_nginx (from the name) | before 1.13.8; before 1.14.4; before 1.15.0 | CNA record |
kubernetes ingress-nginx kubernetes:ingress-nginx | before 1.13.8; from 1.14.0 before 1.14.4 | NVD |
References
- https://github.com/kubernetes/kubernetes/issues/137560issue-tracking, third-party-advisory
- http://www.openwall.com/lists/oss-security/2026/03/09/8mailing-list, third-party-advisory
- https://github.com/bvabhishek/CVE-2026-3288-labmitigation, 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.