{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64641",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-20T17:11:30.895Z",
        "datePublished": "2026-07-27T17:40:01.137Z",
        "dateUpdated": "2026-07-27T18:54:59.134Z"
    },
    "containers": {
        "cna": {
            "title": "Next.js: Denial of Service in App Router using Server Actions",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-834",
                            "lang": "en",
                            "description": "CWE-834: Excessive Iteration",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.2,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj"
                },
                {
                    "name": "https://github.com/vercel/next.js/pull/96013",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vercel/next.js/pull/96013"
                },
                {
                    "name": "https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12"
                },
                {
                    "name": "https://github.com/vercel/next.js/releases/tag/v15.5.21",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vercel/next.js/releases/tag/v15.5.21"
                },
                {
                    "name": "https://github.com/vercel/next.js/releases/tag/v16.2.11",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vercel/next.js/releases/tag/v16.2.11"
                }
            ],
            "affected": [
                {
                    "vendor": "vercel",
                    "product": "next.js",
                    "versions": [
                        {
                            "version": ">= 13.0.0, < 15.5.21",
                            "status": "affected"
                        },
                        {
                            "version": ">= 16.0.0, < 16.2.11",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-27T17:40:01.137Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11."
                }
            ],
            "source": {
                "advisory": "GHSA-m99w-x7hq-7vfj",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-27T18:54:52.018065Z",
                                "id": "CVE-2026-64641",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-27T18:54:59.134Z"
                }
            }
        ]
    }
}