CVE-2023-48312 is a critical privilege escalation vulnerability affecting clastix capsule-proxy versions prior to 0.4.6. The flaw stems from a missing authentication check based on the TokenReview result, allowing unauthenticated attackers to bypass security and interact with the Kubernetes API Server if anonymous authentication is disabled. With a CVSS score of 9.8, this vulnerability poses a severe risk of full compromise (confidentiality, integrity, availability) with low attack complexity and no user interaction required. While no active exploitation, public exploit code, or significant community discussion has been observed, immediate upgrade to version 0.4.6 is strongly advised to mitigate this critical risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.4.5CPE matchmatch criteria | cpe:2.3:a:clastix:capsule-proxy:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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