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CVE-2023-5043

HighPublished

Ingress nginx annotation injection causes arbitrary command execution

Published: Oct 25, 2023
Updated: Feb 13, 2025
Assigning CNA: kubernetes
Evidence observed: Aug 25, 2026

Primary CVSS

8.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

2.2%

Low · next 30 days

Percentile: 81.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Ingress nginx annotation injection causes arbitrary command execution.

Sources

CVE-2023-5043PoC
Proof-of-concept exploit for CVE-2023-5043, demonstrating arbitrary command execution via Ingress NGINX annotation injection in Kubernetes, with a curl-based RCE trigger.

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