Key Vulnerability in Kyverno Admission Controller Affecting Token Security
CVE-2026-84195

8.3HIGH

Key Information:

Vendor

Kyverno

Status
Kyverno
Vendor
CVE Published:
1 September 2026

What is CVE-2026-84195?

Kyverno versions prior to 1.16.4 are susceptible to a credential leakage vulnerability where the admission controller's ServiceAccount token is automatically attached to outbound HTTP requests in apiCall service mode. This oversight allows malicious actors to exfiltrate sensitive tokens by redirecting apiCall requests to external or attacker-controlled endpoints, which could lead to unauthorized access and full control over Kyverno policies and cluster resources. It is crucial for users to update to the latest version to safeguard their systems against potential exploits.

Affected Version(s)

kyverno 0 < 1.16.4

kyverno 1.16.4

References

https://github.com/kyverno/kyverno/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/kyverno-before-1.16....
third-party-advisory

CVSS V4

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

scumfrog
.