What’s Vulnerable › Vulnerabilities

CVE-2026-84196: Kyverno before 1.18.0 Server-Side Request Forgery via apiCall

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-01 · updated 2026-09-10
• Weakness: CWE-918

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.

Affected products

• kyverno: before 1.18.0 — fixed in 1.18.0

How to fix

Upgrade to a fixed version: kyverno 1.18.0. Check the vendor advisory for mitigations.

References

• https://github.com/kyverno/kyverno/security/advisories/GHSA-qr4g-8hrp-c4rw
• https://www.vulncheck.com/advisories/kyverno-before-1.18.0-server-side-request-forgery-via-apicall

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