8.8

CVE-2023-3893: kubernetes csi_proxy Improper Input Validation

CVSS: 8.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2023-3893DEBIAN-CVE-2023-3893GHSA-r6cc-7wj7-gfx2
Published 03-11-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-3893 is a high (CVSS 8.8) Improper Input Validation vulnerability in kubernetes csi_proxy. EPSS estimates a 2.48% chance of exploitation in the next 30 days, higher than 84.3% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
2.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-11-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes running kubernetes-csi-proxy may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes running kubernetes-csi-proxy.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

2.48%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.48% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.48%

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
Debian1 product
  • kubernetes< 1.20.5+really1.20.2-1
Github.com/kubernetes-csi1 product
  • csi-proxy≥ 0.1.0-rc1, < 1.1.3 | < 0.0.0-20230821192013-2523e6674ded | ≥ 1.1.3-0, < 1.1.3-0.20230821192013-2523e6674ded | < 1.1.3
Github.com/kubernetes-csi/csi-proxy1 product
  • v2≥ 2.0.0-alpha.0, < 2.0.0-alpha.1
Ubuntu1 product
  • kubernetesAll versions (No fix recorded)

5 vendors · 6 products

References

12 links
Show all 12 references