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CVE-2023-3893

29
FAUCET Score

CVE-2023-3893 describes a privilege escalation vulnerability in Kubernetes affecting Windows nodes running kubernetes-csi-proxy. An authenticated user with pod creation privileges on these specific nodes can escalate to administrative access. This vulnerability carries a high CVSS score of 8.8, indicating a network-based attack with low complexity and significant impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered notable community discussion and media coverage, suggesting awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.1.2CPE matchmatch criteria
cpe:2.3:a:kubernetes:csi_proxy:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:kubernetes:csi_proxy:2.0.0:alpha0:*:*:*:*:*:*
>= 0, <= v1.1.2CPE match
cpe:2.3:a:kubernetes:csi_proxy:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.86%
Probability of exploitation in next 30 days
EPSS Percentile
85.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0286 is in the 84th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

check_pointpatch availablevia llm_extracted
View patch
chromepatch availablevia llm_extracted
View patch
gopatch availablevia ghsa
Product: github.com/kubernetes-csi/csi-proxyFixed in: 1.1.3
gopatch availablevia ghsa
Product: github.com/kubernetes-csi/csi-proxyFixed in: 0.0.0-20230821192013-2523e6674ded
gopatch availablevia ghsa
Product: github.com/kubernetes-csi/csi-proxyFixed in: 1.1.3-0.20230821192013-2523e6674ded
gopatch availablevia ghsa
Product: github.com/kubernetes-csi/csi-proxy/v2Fixed in: 2.0.0-alpha.1
infiniflowpatch availablevia llm_extracted
View patch
vuepatch availablevia llm_extracted
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (6)

goGHSA-r6cc-7wj7-gfx2high

Kubernetes csi-proxy vulnerable to privilege escalation due to improper input validation

Nov 3, 2023
redhatCVE-2023-3893Important

kubernetes: Insufficient input sanitization on kubernetes CSI proxy leads to privilege escalation

Aug 23, 2023
vuellm-vue-0852f591c012f248

Insufficient input sanitization on kubernetes-csi-proxy leads to privilege escalation

chromellm-chrome-8f4f925be2e4d061

Insufficient input sanitization on kubernetes-csi-proxy leads to privilege escalation

check_pointllm-check_point-b926eca1ccd72615

Insufficient input sanitization on kubernetes-csi-proxy leads to privilege escalation

infiniflowllm-infiniflow-ae6dfa010cd5df48

Insufficient input sanitization on kubernetes-csi-proxy leads to privilege escalation

References

github.com / kubernetes/kubernetes/issues/119594
Issue TrackingVendor Advisory
groups.google.com / g/kubernetes-security-announce/c/lWksE2BoCyQ
Mailing List
security.netapp.com / advisory/ntap-20231221-0004
Third Party Advisory