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Vulnerabilities CVE-2026-16242

CVE-2026-16242

Critical
Open
TLP:CLEAR

Hypershift: konnectivity proxy-server accepts agent connections without validating client certificates

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Description

A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic.

Details

CVSS Score
9.4
EPSS Score
0.66%

48.5th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Confidence
90%
Published
Jul 20, 2026
Last Modified
Aug 12, 2026
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