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CVE-2026-84199— Kyverno before 1.16.2 SSRF via APICall Feature

Quick assessment

Affected
kyverno kyverno
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kyverno 1.16.2 之前的版本在 APICall 功能中存在一个服务器端请求伪造（SSRF）漏洞。策略中 ServiceCall 配置里的 URL 字段未经验证，因此拥有命名空间级别策略创建权限的用户可以指示 Kyverno 向任意的内部资源发起 HTTP 请求（例如云元数据端点，如 169.254.169.254，或其他租户的资源）。由于 Kyverno 使用其集群范围内高权限的 ServiceAccount 执行这些请求（这是一种“混淆代理人”问题），响应内容——可能包含其他租户的密钥和云 IAM 凭

CVSS 7.7 · High
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I. Basic Information for CVE-2026-84199

Vulnerability Information
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Vulnerability Title
Kyverno before 1.16.2 SSRF via APICall Feature
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kyverno kyverno 0 ~ 1.16.2 -

II. Public POCs for CVE-2026-84199

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III. Intelligence Information for CVE-2026-84199

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Other References for CVE-2026-84199 (2)

Same Patch Batch · kyverno · 2026-09-01 · 6 CVEs total

CVE-2026-84200 9.0 CRITICAL Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions
CVE-2026-84195 7.7 HIGH Kyverno before 1.16.4 Credential Leak via apiCall
CVE-2026-84196 7.7 HIGH Kyverno before 1.18.0 Server-Side Request Forgery via apiCall
CVE-2025-15613 6.5 MEDIUM Kyverno before v1.13.4 SSRF via Service Call
CVE-2023-54356 3.7 LOW Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites

IV. Related Vulnerabilities

Same product: kyverno
Same vendor: kyverno
Same weakness: CWE-918

V. Comments for CVE-2026-84199

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