{"id":"CVE-2022-23652","aliases":["GHSA-9cwv-cppx-mqjm","GO-2022-0329"],"url":"https://o3.security/vulnerability/CVE-2022-23652","summary":"Privilege escalation using hop-by-hop Connection header","details":"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.","published":"2022-02-22T19:55:11Z","modified":"2026-08-12T03:51:31.604149899Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Go","name":"github.com/clastix/capsule-proxy","fixedVersion":"0.2.1"}],"fix":{"url":"https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8","label":"clastix/capsule-proxy@efe91f6"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23652.json"},{"type":"ADVISORY","url":"https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23652"},{"type":"REPORT","url":"https://github.com/clastix/capsule-proxy/issues/188"},{"type":"FIX","url":"https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:31.604149899Z"}}