CVE-2026-77459 (GCVE-0-2026-77459)
Vulnerability from cvelistv5
Published
2026-10-13 16:26
Modified
2026-10-14 15:29
Severity ?
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-863 - Incorrect Authorization
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.10.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, Argo CD creates PostDelete resource hooks without applying the AppProject destination and resource authorization checks used during ordinary synchronization. The omitted checks include cluster-scoped and namespaced resource allow/deny lists. A user who can write to an Application's Git repository can commit a delete hook targeting a forbidden namespace, server, group, kind, or resource name, and deletion of the Application causes the application-controller to create that resource with its destination-cluster credentials. The reachable impact is bounded by the controller's cluster access but can include cluster-scoped resources, disallowed namespaces, persistent hook objects, and secondary objects created by a hook Job. PreSync, Sync, PostSync, and SyncFail hooks continue to use the normal project checks. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2.
References
Impacted products
Vendor Product Version
argoproj argo-cd Version: >= 2.10.0, <= 2.14.21
Version: >= 3.0.0, < 3.3.15
Version: >= 3.4.0, < 3.4.10
Version: >= 3.5.0, < 3.5.4
Version: >= 3.6.0-rc1, < 3.6.0-rc2
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