CVE-2026-42880— ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction
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I. Basic Information for CVE-2026-42880
Vulnerability Information
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Vulnerability Title
ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction
Source: NVD (National Vulnerability Database)
Vulnerability Description
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Argo CD 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Argo CD是Argo开源的一个用于Kubernetes的声明性GitOps连续交付工具。 Argo CD 3.2.0至3.2.11之前版本和3.3.0至3.3.9之前版本存在信息泄露漏洞，该漏洞源于ServerSideDiff端点缺少授权和数据掩码，可能导致具有只读权限的攻击者通过Kubernetes API服务器的Server-Side Apply dry-run机制从etcd提取明文Kubernetes Secret数据。
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)
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Affected Products
II. Public POCs for CVE-2026-42880
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IV. Related Vulnerabilities
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