3.1

CVE-2026-24513: kubernetes ingress-nginx

CVSS: 3.1v3.1LowDeferred
AliasesCGA-3ppm-9jj3-8cq6CGA-459p-hfhc-46w9CGA-5jmv-4c5c-v368
Published 03-02-2026Last modified 18-02-2026
Open JSON

Vulnerability summary

CVE-2026-24513 is a low (CVSS 3.1) vulnerability in kubernetes ingress-nginx. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.1% of scored vulnerabilities.

Overall risk
12/100
0100
Low · default modelHow is this calculated?
CVSS score
3.1/10
010
Low · v3.1 (CVE.org)
EPSS score
0.34%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:0403-1CGA-HCQ8-CGV2-2246

Timeline

  1. 03-02-2026
    PublishedVulnerability first disclosed.
  2. 18-02-2026
    Last modifiedVulnerability information updated.

Description

A security issue was discovered in ingress-nginx where the protection afforded by the `auth-url` Ingress annotation may not be effective in the presence of a specific misconfiguration. If the ingress-nginx controller is configured with a default custom-errors configuration that includes HTTP errors 401 or 403, and if the configured default custom-errors backend is defective and fails to respect the X-Code HTTP header, then an Ingress with the `auth-url` annotation may be accessed even when authentication fails. Note that the built-in custom-errors backend works correctly. To trigger this issue requires an administrator to specifically configure ingress-nginx with a broken external component.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

+0.03 pp

From 0.31% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard10 products
  • ingress-nginx-controller-1.12All versions (No fix recorded)
  • ingress-nginx-controller-1.13< 1.13.9-r14
  • ingress-nginx-controller-1.14< 1.14.5-r16
  • ingress-nginx-controller-1.15All versions (No fix recorded)
  • ingress-nginx-controller-fips-1.12All versions (No fix recorded)
Wolfi5 products
  • ingress-nginx-controller-1.12All versions (No fix recorded)
  • ingress-nginx-controller-1.14< 1.14.5-r16
  • ingress-nginx-controller-1.15All versions (No fix recorded)
  • ingress-nginx-custom-error-pages-1.14< 1.14.5-r27
  • ingress-nginx-custom-error-pages-compat-1.14All versions (No fix recorded)
K8s.io1 product
  • ingress-nginx< 1.13.7 | ≥ 1.14.0, < 1.14.3 | All versions (No fix recorded)
Kubernetes1 product

4 vendors · 17 products

References

5 links