CVE-2026-84196: Kyverno

High severity, CVSS 7.7. EPSS: 0.4% chance of exploitation in the next 30 days.

Kyverno before 1.18.0 contains a server-side request forgery vulnerability in apiCall.service.url that allows authenticated users to send arbitrary HTTP requests by injecting user-controlled input through variable substitution. Attackers can target internal services, cloud metadata endpoints, and loopback addresses, with response data reflected in admission error messages enabling non-blind data exfiltration.

Affected products

• Kyverno Kyverno: before 1.18.0 (fixed in 1.18.0)

Published 2026-09-01. Last modified 2026-09-10.