CVE-2026-84199

Kyverno before 1.16.2 contains a server-side request forgery (SSRF) vulnerability in the APICall feature. The URL field in a Policy's ServiceCall configuration is not validated, so a user with namespace-level Policy creation permissions can direct Kyverno to make HTTP requests to arbitrary internal resources (e.g., cloud metadata endpoints such as 169.254.169.254 or other tenants' resources). Because Kyverno executes these requests using its cluster-wide high-privilege ServiceAccount (a Confused Deputy problem), the responses—potentially including other tenants' secrets and cloud IAM credentials—are returned in the PolicyReport and can be read by the attacker, breaking multi-tenant isolation.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/kyverno/kyverno/security/advisories/GHSA-fmqp-4wfc-w3v7
https://www.vulncheck.com/advisories/kyverno-before-1.16.2-ssrf-via-apicall-feature
https://github.com/kyverno/kyverno/security/advisories/GHSA-fmqp-4wfc-w3v7

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 12:17

Updated : 2026-09-10 15:43

NVD link : CVE-2026-84199

Mitre link : CVE-2026-84199

CVE.ORG link : CVE-2026-84199

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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