{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-4249",
        "assignerOrgId": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
        "state": "PUBLISHED",
        "assignerShortName": "WSO2",
        "dateReserved": "2026-03-16T05:47:35.673Z",
        "datePublished": "2026-07-06T10:16:56.055Z",
        "dateUpdated": "2026-07-06T11:03:48.847Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
                "shortName": "WSO2",
                "dateUpdated": "2026-07-06T10:16:56.055Z"
            },
            "title": "Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-707",
                            "description": "CWE-707: Use of Out-of-Scope Validation",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-10",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-10 CAPEC-10: Denial of Service"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "WSO2",
                    "product": "WSO2 Universal Gateway",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.5.0",
                            "lessThan": "4.5.0.54",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.6.0",
                            "lessThan": "4.6.0.18",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.7.0",
                            "lessThan": "4.7.0.2",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                },
                {
                    "vendor": "WSO2",
                    "product": "WSO2 Traffic Manager",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.5.0",
                            "lessThan": "4.5.0.53",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.6.0",
                            "lessThan": "4.6.0.18",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.7.0",
                            "lessThan": "4.7.0.2",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                },
                {
                    "vendor": "WSO2",
                    "product": "WSO2 API Control Plane",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.5.0",
                            "lessThan": "4.5.0.55",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.6.0",
                            "lessThan": "4.6.0.19",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.7.0",
                            "lessThan": "4.7.0.2",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                },
                {
                    "vendor": "WSO2",
                    "product": "WSO2 API Manager",
                    "versions": [
                        {
                            "status": "unknown",
                            "version": "0",
                            "lessThan": "3.2.0",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.2.0",
                            "lessThan": "3.2.0.470",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.2.1",
                            "lessThan": "3.2.1.89",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.0.0",
                            "lessThan": "4.0.0.390",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.1.0",
                            "lessThan": "4.1.0.254",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.2.0",
                            "lessThan": "4.2.0.194",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.3.0",
                            "lessThan": "4.3.0.105",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.4.0",
                            "lessThan": "4.4.0.69",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.5.0",
                            "lessThan": "4.5.0.54",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.6.0",
                            "lessThan": "4.6.0.18",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.7.0",
                            "lessThan": "4.7.0.2",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "cpeApplicability": [
                {
                    "operator": "OR",
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.5.0",
                                    "versionEndExcluding": "4.5.0.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6.0",
                                    "versionEndExcluding": "4.6.0.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7.0",
                                    "versionEndExcluding": "4.7.0.2"
                                }
                            ]
                        },
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.5.0",
                                    "versionEndExcluding": "4.5.0.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6.0",
                                    "versionEndExcluding": "4.6.0.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7.0",
                                    "versionEndExcluding": "4.7.0.2"
                                }
                            ]
                        },
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.5.0",
                                    "versionEndExcluding": "4.5.0.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6.0",
                                    "versionEndExcluding": "4.6.0.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7.0",
                                    "versionEndExcluding": "4.7.0.2"
                                }
                            ]
                        },
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2.0",
                                    "versionEndExcluding": "3.2.0.470"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2.1",
                                    "versionEndExcluding": "3.2.1.89"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.0.0",
                                    "versionEndExcluding": "4.0.0.390"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1.0",
                                    "versionEndExcluding": "4.1.0.254"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.2.0",
                                    "versionEndExcluding": "4.2.0.194"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3.0",
                                    "versionEndExcluding": "4.3.0.105"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4.0",
                                    "versionEndExcluding": "4.4.0.69"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.5.0",
                                    "versionEndExcluding": "4.5.0.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6.0",
                                    "versionEndExcluding": "4.6.0.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7.0",
                                    "versionEndExcluding": "4.7.0.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON payloads without sufficient validation of their structure and content. This allows an unauthenticated remote attacker to inject malicious JSON data that can lead to a persistent denial of service condition.\n\nSuccessful exploitation of this vulnerability can disrupt the API Gateway, preventing legitimate API traffic from being processed and impacting complete service availability. The denial of service is persistent, requiring manual intervention to restore normal operations.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON payloads without sufficient validation of their structure and content. This allows an unauthenticated remote attacker to inject malicious JSON data that can lead to a persistent denial of service condition.\n\nSuccessful exploitation of this vulnerability can disrupt the API Gateway, preventing legitimate API traffic from being processed and impacting complete service availability. The denial of service is persistent, requiring manual intervention to restore normal operations."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "baseSeverity": "HIGH",
                        "baseScore": 8.6,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"
                    }
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/#solution",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<span style=\"background-color: transparent;\">Follow the instructions given on </span><a target=\"_blank\" rel=\"nofollow\" href=\"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/#solution\"><span style=\"background-color: transparent;\">https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/#solution</span></a> <br>"
                        }
                    ]
                }
            ],
            "source": {
                "advisory": "WSO2-2026-5236",
                "discovery": "INTERNAL"
            },
            "x_generator": {
                "engine": "Vulnogram 0.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-06T11:03:16.637529Z",
                                "id": "CVE-2026-4249",
                                "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": "2026-07-06T11:03:48.847Z"
                }
            }
        ]
    }
}