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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是Kyverno团队开源的一款云原生安全基线管理工具。 Kyverno 1.16.2之前版本存在服务端请求伪造漏洞，该漏洞源于APICall功能中Policy的ServiceCall配置的URL字段未经验证，可能允许具有命名空间级Policy创建权限的用户利用集群范围的高权限ServiceAccount向任意内部资源发起HTTP请求，响应中可能包含其他租户的机密信息和云IAM凭据，导致多租户隔离被破坏。

CVSS 7.7 · High EPSS 0.36% · P28

Affected Version Matrix 2

VendorProduct Version RangeStatus
kyverno kyverno < 1.16.2 affected
1.16.2 unaffected
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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
Vulnerability Title
Kyverno 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kyverno是Kyverno团队开源的一款云原生安全基线管理工具。 Kyverno 1.16.2之前版本存在服务端请求伪造漏洞，该漏洞源于APICall功能中Policy的ServiceCall配置的URL字段未经验证，可能允许具有命名空间级Policy创建权限的用户利用集群范围的高权限ServiceAccount向任意内部资源发起HTTP请求，响应中可能包含其他租户的机密信息和云IAM凭据，导致多租户隔离被破坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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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Vendor Advisories 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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