How severe is CVE-2023-5043?

CVE-2023-5043 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2023-5043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5043?

CVE-2023-5043 affects Kubernetes Ingress-nginx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5043?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-5043 published?

CVE-2023-5043 was published on 2023-10-25 and last updated on 2026-06-17.

CVE-2023-5043

CVE-2023-5043 is a high-severity vulnerability in Kubernetes Ingress-nginx with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Kubernetes Ingress-nginx
Published: 2023-10-25
Last modified: 2026-06-17

Description

Ingress nginx annotation injection causes arbitrary command execution.

Frequently asked questions

What is CVE-2023-5043?: Ingress nginx annotation injection causes arbitrary command execution.
How severe is CVE-2023-5043?: CVE-2023-5043 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2023-5043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5043?: CVE-2023-5043 affects Kubernetes Ingress-nginx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-5043 published?: CVE-2023-5043 was published on 2023-10-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*

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