CVE-2022-23652

capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious `Connection` header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the `cluster-admin` Role bound to `capsule-proxy`. There are no known workarounds for this issue.

• CWE-287

• https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8Patch, Third Party Advisory
• https://github.com/clastix/capsule-proxy/issues/188Exploit, Issue Tracking, Third Party Advisory
• https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjmThird Party Advisory
• https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8Patch, Third Party Advisory
• https://github.com/clastix/capsule-proxy/issues/188Exploit, Issue Tracking, Third Party Advisory
• https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjmThird Party Advisory

Published

Feb 22, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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