CVE-2023-5044: Code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation.

Q: How do I fix CVE-2023-5044?

ingress-nginx: upgrade to 1.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-5044 being exploited?

CVE-2023-5044 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-5044 affect?

CVE-2023-5044 affects ingress-nginx. Severity is high (CVSS 7.6). Code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation.

Q: How urgent is CVE-2023-5044?

Priority 56/100. High severity; EPSS top 1%: very likely to be exploited; On your watchlist

This week

HIGH 7.6WATCHLISTUPGRADE

CVE-2023-5044 is a high-severity flaw (CVSS 7.6) affecting ingress-nginx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	59.6% (top 1%)
CISA exploited list	No
Weakness	CWE-20, CWE-94
Published	2023-10-25
Last modified	2026-06-17

Publisher (CNA): Kubernetes · Vendor: kubernetes

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-25 20:15 UTCPublished CVE record published
2026-06-17 06:47 UTCUpdated Record last modified

kubernetes ingress-nginx UPGRADE

Affected: < 1.9.0

Fixed in: 1.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ingress-nginx || rpm -q ingress-nginx || ingress-nginx --version

2. UPGRADE to 1.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ingress-nginx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ingress-nginx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-5044?

ingress-nginx: upgrade to 1.9.0. Exact commands for each OS are on this page.

Is CVE-2023-5044 being exploited?

CVE-2023-5044 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-5044 affect?

CVE-2023-5044 affects ingress-nginx. Severity is high (CVSS 7.6). Code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation.

How urgent is CVE-2023-5044?

Priority 56/100. High severity; EPSS top 1%: very likely to be exploited; On your watchlist

Software pages

nginx vulnerabilities · Kubernetes vulnerabilities

Related CVEs

CVE-2026-3288 HIGH 8.8 UPGRADE A security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/rewrite-target` Ingres
CVE-2023-5043 HIGH 7.6 UPGRADE Ingress nginx annotation injection causes arbitrary command execution.
CVE-2022-4886 HIGH 8.8 UPGRADE Ingress-nginx `path` sanitization can be bypassed with `log_format` directive.
CVE-2021-25748 HIGH 7.6 UPGRADE A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can us
CVE-2021-25742 HIGH 7.6 UPGRADE MITIGATE A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can us

References

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