CVE-2026-42880

Severity CVSS v4.0:

Pending analysis

Type:

CWE-200 Information Leak / Disclosure

Publication date:

07/05/2026

Last modified:

11/05/2026

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&#39;s ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server&#39;s Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 9.60 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

9.60

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:argoproj:argo_cd::::::::	3.2.0 (including)	3.2.11 (excluding)
cpe:2.3:a:argoproj:argo_cd::::::::	3.3.0 (including)	3.3.9 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-42880

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools