{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54523",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T18:40:01.651Z",
        "datePublished": "2026-08-26T14:20:37.236Z",
        "dateUpdated": "2026-08-26T15:06:37.284Z"
    },
    "containers": {
        "cna": {
            "title": "Kyverno: NamespacedGeneratingPolicy generator.apply() namespace argument unvalidated -- background controller creates RoleBindings in any namespace including kube-system",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 9.6,
                        "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:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/kyverno/kyverno/security/advisories/GHSA-79gf-7frw-68m9",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-79gf-7frw-68m9"
                },
                {
                    "name": "https://github.com/kyverno/kyverno/pull/16238",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kyverno/kyverno/pull/16238"
                },
                {
                    "name": "https://github.com/kyverno/kyverno/commit/0919553c0ea1904f8d891280c92018da97946a06",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kyverno/kyverno/commit/0919553c0ea1904f8d891280c92018da97946a06"
                },
                {
                    "name": "https://github.com/kyverno/kyverno/commit/5164bcdeda5b57678bc2d7a03ecc2cbb02982dae",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kyverno/kyverno/commit/5164bcdeda5b57678bc2d7a03ecc2cbb02982dae"
                },
                {
                    "name": "https://github.com/kyverno/sdk/commit/6573937441443e1ba5af9fbb28d5c0f20297f9df",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kyverno/sdk/commit/6573937441443e1ba5af9fbb28d5c0f20297f9df"
                },
                {
                    "name": "https://github.com/kyverno/kyverno/releases/tag/v1.18.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kyverno/kyverno/releases/tag/v1.18.2"
                }
            ],
            "affected": [
                {
                    "vendor": "kyverno",
                    "product": "kyverno",
                    "versions": [
                        {
                            "version": ">= 1.18.0, < 1.18.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-26T14:20:55.122Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Kyverno is a policy engine designed for cloud native platform engineering teams. From 1.18.0 until 1.18.2, the NamespacedMutatingPolicy CEL compiler exposes the generator library to matchConditions, allowing a namespace-scoped policy to invoke generator.apply(namespace, resources) with an arbitrary target namespace. The validation in pkg/cel/policies/mpol/validate.go checks that the policy compiles but does not enforce namespace scope, and GenerateResources in pkg/cel/libs/context.go does not reject the cross-namespace target. A user who can create NamespacedMutatingPolicy objects in one namespace can cause the admission controller, operating with cluster-wide privileges, to create ConfigMaps, NetworkPolicies, Secrets, RoleBindings, and other resources in another namespace, enabling unauthorized modification and potential privilege escalation. This issue is fixed in version 1.18.2."
                }
            ],
            "source": {
                "advisory": "GHSA-79gf-7frw-68m9",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-79gf-7frw-68m9",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-26T15:06:17.140283Z",
                                "id": "CVE-2026-54523",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-08-26T15:06:37.284Z"
                }
            }
        ]
    }
}