Vulnerability · Published Sep 1, 2026 · Assigned by VulnCheck

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

High 7.7

In plain English

A high-severity server-side request forgery in kyverno from kyverno. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.4%top 70.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/kyverno/kyverno	no fix listed	GHSA-qr4g-8hrp-c4rw
Go	github.com/kyverno/kyverno	no fix listed	GO-2026-5594

Affected products (as reported)

Vendor	Product	Versions
kyverno	kyverno	0 – before 1.18.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-qr4g-8hrp-c4rw) vendor-advisory
VulnCheck Advisory: Kyverno before 1.18.0 Server-Side Request Forgery via apiCall third-party-advisory