CVE-2026-84196
High
Description
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.
SeverityHigh
CVSS7.7
Exploit probability—
ProductGithub.com/kyverno/kyverno
PublishedSep 1, 2026
First seenSep 1, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/kyverno/kyvernoGo | v ≤ 1.17.1, No range specified | — |
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