CVE-2026-45738
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
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.
Risk Assessment
An attacker can exploit this flaw to execute arbitrary JavaScript in the context of an administrator's session, potentially leading to token theft, account takeover, or unauthorized actions in the Kubernetes cluster.
Recommendation
Immediately upgrade Argo CD to version 3.2.12, 3.3.10, or 3.4.2 depending on your branch. Restrict application write access to trusted users only.
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-2026-45737Medium
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.
- 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. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user's authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.