CVE-2026-45737
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
Argo CD ServerSideDiff in versions 3.2.0 through 3.2.12, 3.3.10, and 3.4.2 fails to properly sanitize Kubernetes Secret data, potentially exposing sensitive values including those in the kubectl.kubernetes.io/last-applied-configuration annotation. This allows sensitive data to appear in the UI or CLI diffs.
Risk Assessment
The organization is at risk of leaking Kubernetes Secrets, which could lead to unauthorized access to systems or data.
Recommendation
Upgrade Argo CD to versions 3.2.12, 3.3.10, or 3.4.2 immediately, which contain the fix for this vulnerability.
Other vulnerabilities in Argo CD
See all- CVE-2026-42880Critical
In Argo CD versions 3.2.0 to 3.2.10 and 3.3.0 to 3.3.8, there is a missing authorization and data-masking gap in the ServerSideDiff endpoint. This 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.
- CVE-2026-45738High
A vulnerability in Argo CD allows users with application write access to set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered as anchor href values in the Summary tab URLs section without URL validation, enabling JavaScript execution in a higher-privileged user's authenticated session. The issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.
- CVE-2026-15416High
A flaw was identified in Argo CD, the GitOps engine used by Red Hat OpenShift GitOps, that could allow an unauthenticated attacker with network access to the Argo CD repo-server to achieve remote code execution. Under certain conditions, the attacker may then manipulate cached data to deploy malicious Kubernetes resources to managed clusters, potentially resulting in complete cluster compromise.
- CVE-2026-43824High
A vulnerability in Argo CD versions 3.2.0 through 3.2.10 and 3.3.0 through 3.3.8 allows reading cleartext Kubernetes Secret data via the ServerSideDiff feature.
- CVE-2023-40025Medium
Argo CD, a GitOps continuous delivery tool for Kubernetes, has a bug in versions starting from 2.6.0 that causes open web terminal sessions to not expire. This allows users to send websocket messages even after the token has expired.
- CVE-2022-41354Medium
An access control issue in Argo CD v2.4.12 and below allows unauthenticated attackers to enumerate existing applications. The problem stems from missing proper access controls.
Original NVD description (English source)
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 3.2.0 until 3.2.12, 3.3.10, and 3.4.2, Argo CD ServerSideDiff can expose Kubernetes Secret values embedded in the kubectl.kubernetes.io/last-applied-configuration annotation because HideSecretData(target, live, ...) does not fully sanitize ResourceDiff.TargetState and LiveState predicted live Secret objects, allowing sensitive data, stringData, and annotations to appear in UI or CLI diffs. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.