Back
CVE-2022-23652
Privilege escalation using hop-by-hop Connection header
High8.8EPSS 1.4%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 27% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
- affected < 0.2.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/clastix/capsule-proxyGHSA-9cwv-cppx-mqjm (opens in a new tab)
References (3)
- https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/clastix/capsule-proxy/issues/188 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9cwv-cppx-mqjm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-23652)Record last updated .