CVE-2026-3288 json
ingress-nginx rewrite-target nginx configuration injection
published 2026-03-09 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-10360
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.0%
- EPSS 7.0% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
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.)
Patch / fix
- Kubernetes ingress-nginx 1.13.8, 1.14.4, 1.15.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 6 mo ago
Exploit prediction
6.99% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/bvabhishek/CVE-2026-3288-lab referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Kubernetes ingress-nginx
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
github.com
/bvabhishek/CVE-2026-3288-lab
exploit, mitigation, third-party-advisory
-
github.com
/kubernetes/kubernetes/issues/137560
issue-tracking, third-party-advisory
-
openwall.com
/lists/oss-security/2026/03/09/8
mailing-list, third-party-advisory
Sources
- CVE List CVE-2026-3288
- NVD CVE-2026-3288
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