by Kastro CVE-2026-42880
argoproj argo-cd — ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
argo-cd>= 3.2.0, < 3.2.11–CNA
argo-cd>= 3.3.0, < 3.3.9–CNA
Red Hat OpenShift GitOps 1.19see advisory1779211412redhat-SADP
Red Hat OpenShift GitOps 1.20see advisory1776942799redhat-SADP
Red Hat OpenShift GitOps 1.20see advisory1779285564redhat-SADP
Red Hat OpenShift GitOps 1.20see advisory1779285074redhat-SADP
Red Hat OpenShift GitOps 1.20see advisory1779284685redhat-SADP
Red Hat Openshift Data Foundation 4see advisory–redhat-SADP
Red Hat OpenShift GitOpssee advisory–redhat-SADP
Red Hat OpenShift GitOpssee advisory–redhat-SADP
Red Hat OpenShift GitOpssee advisory–redhat-SADP
Red Hat OpenShift GitOpssee advisory–redhat-SADP
Scores by source
GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
redhat-SADP (CNA)7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total