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.
https://github.com/argoproj/argo-cd/security/advisories/GHSA-rg3g-4rw9-gqrp
https://github.com/argoproj/argo-cd/releases/tag/v3.4.2
https://github.com/argoproj/argo-cd/releases/tag/v3.3.10
https://github.com/argoproj/argo-cd/releases/tag/v3.2.12
https://github.com/argoproj/argo-cd/commit/bcb4298afc9fcff5f5d69f4e1db2d0a75983f42c
https://github.com/argoproj/argo-cd/commit/ac11bec9986807adc8886ef1181eced7347ef5c6
https://github.com/argoproj/argo-cd/commit/87e9148320749693624d08e3d6fa2cc217c672a0
https://github.com/argoproj/argo-cd/commit/7879e6322465080a82d152bf00f2b92e0f36c658