8.1

CVE-2021-25745: kubernetes ingress-nginx Improper Input Validation

CVSS: 8.1v3.1HighModified
AliasesGHSA-pvmg-xgmx-9mxhopenSUSE-SU-2024:12031-1
Published 06-05-2022Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-25745 is a high (CVSS 8.1) Improper Input Validation vulnerability in kubernetes ingress-nginx. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.2% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
1.18%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 5
CGA-3W2P-QRXR-XVC2CGA-5Q84-R6PV-M4Q2CGA-CQX6-4P8X-9V67CGA-Q93F-R479-X2RJCGA-R566-V89X-H5P2

Timeline

  1. 06-05-2022
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the spec.rules[].http.paths[].path field of an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.18%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

+0.02 pp

From 1.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.18%

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

Kubernetes2 products
K8s.io1 product
  • ingress-nginx< 1.2.0
Opensuse1 product
  • rke&distro=openSUSE Tumbleweed< 1.3.10-1.1

3 vendors · 4 products

References

7 links