Bug 2526851 (CVE-2026-84196)

Summary: CVE-2026-84196 github.com/kyverno/kyverno: Kyverno: Server-Side Request Forgery via apiCall.service.url allows information disclosure.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gbenhaim, niyer, twaugh
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Kyverno. This server-side request forgery (SSRF) vulnerability in apiCall.service.url 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. The response data is reflected in admission error messages, enabling non-blind data exfiltration, which means sensitive information can be disclosed.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-09-01 15:13:58 UTC
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.