{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-77459",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-20T20:07:49.961Z",
        "datePublished": "2026-10-13T16:26:47.088Z",
        "dateUpdated": "2026-10-14T15:29:55.346Z"
    },
    "containers": {
        "cna": {
            "title": "Argo CD: AppProject destination-namespace and resource restrictions bypassed by PreDelete/PostDelete resource hooks",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-863",
                            "lang": "en",
                            "description": "CWE-863: Incorrect Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.9,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-fmxq-cgp8-87wp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-fmxq-cgp8-87wp"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/commit/1149cdc6e932208c4402183cc3d7b7485239940c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/commit/1149cdc6e932208c4402183cc3d7b7485239940c"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/commit/4bc8085b0a6d2296b849539d3d09fc7be7a4a511",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/commit/4bc8085b0a6d2296b849539d3d09fc7be7a4a511"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/commit/7f0a05834b05103d69d7c150e1ee36541b314696",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/commit/7f0a05834b05103d69d7c150e1ee36541b314696"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/commit/d5dd7019ee65be8895133fe4df554e28074242c4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/commit/d5dd7019ee65be8895133fe4df554e28074242c4"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.15",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.15"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.10",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.10"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.5.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.5.4"
                },
                {
                    "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2"
                }
            ],
            "affected": [
                {
                    "vendor": "argoproj",
                    "product": "argo-cd",
                    "versions": [
                        {
                            "version": ">= 2.10.0, <= 2.14.21",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.0.0, < 3.3.15",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.4.0, < 3.4.10",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.5.0, < 3.5.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.6.0-rc1, < 3.6.0-rc2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-13T16:26:47.088Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-fmxq-cgp8-87wp",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-14T15:27:27.557503Z",
                                "id": "CVE-2026-77459",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-14T15:29:55.346Z"
                }
            }
        ]
    }
}