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CVE-2022-23652

27
FAUCET Score

CVE-2022-23652 is a high-severity authentication bypass vulnerability affecting clastix capsule-proxy versions prior to 0.2.1, a reverse proxy for Kubernetes multi-tenancy. An authenticated attacker can exploit a malicious 'Connection' header to achieve privilege escalation, potentially gaining 'cluster-admin' access to the Kubernetes API Server. With a CVSS score of 8.8, this vulnerability is easily exploitable over the network with low complexity and no user interaction, leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and no known workarounds exist.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.2.1CPE matchmatch criteria
cpe:2.3:a:clastix:capsule-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
1.40%
Probability of exploitation in next 30 days
EPSS Percentile
69.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 67th percentile among its peer group of 17,808 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

No media coverage found for this CVE.

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 (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/clastix/capsule-proxyFixed in: 0.2.1

Vendor Advisories (1)

goGHSA-9cwv-cppx-mqjmhigh

Improper Authentication in Capsule Proxy

Feb 23, 2022

References

github.com / clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8
PatchThird Party Advisory
github.com / clastix/capsule-proxy/issues/188
ExploitIssue TrackingThird Party Advisory
github.com / clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm
Third Party Advisory