CVE-2026-84199
highKyverno before 1.16.2 contains a server-side request forgery (SSRF) vulnerability in the APICall feature.
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/kyverno/kyverno/security/advisories/GHSA-fmqp-4wfc-w3v7 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/kyverno-before-1.16.2-ssrf-via-apicall-feature disclosure@vulncheck.com
- https://github.com/kyverno/kyverno/security/advisories/GHSA-fmqp-4wfc-w3v7 134c704f-9b21-4f2e-91b3-4a467353bcc0