{"id":"CVE-2026-4249","aliases":["EUVD-2026-41871","GHSA-7469-8h9r-c5xc"],"status":"published","title":"Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption","description":"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.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00557,"percentile":0.46674,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-707"],"published":"2026-07-06T10:16:56Z","modified":"2026-07-09T13:04:57Z","products":[{"vendor":"wso2","product":"api_control_plane"},{"vendor":"wso2","product":"api_manager"},{"vendor":"wso2","product":"traffic_manager"},{"vendor":"wso2","product":"universal_gateway"},{"vendor":"wso2","product":"wso2 api control plane"},{"vendor":"wso2","product":"wso2 api manager"},{"vendor":"wso2","product":"wso2 traffic manager"},{"vendor":"wso2","product":"wso2 universal gateway"}],"references":[{"url":"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4249"},{"url":"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236"},{"url":"https://github.com/advisories/GHSA-7469-8h9r-c5xc"}],"sources":{"cve":[{"id":"CVE-2026-4249","title":"Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption","description":"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.","status":"published","published":"2026-07-06T10:16:56.055Z","modified":"2026-07-06T11:03:48.847Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-707"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-41871","description":"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.","status":"published","published":"2026-07-06T10:16:56Z","modified":"2026-07-06T11:03:48Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:13.541613Z"}],"ghsa":[{"id":"GHSA-7469-8h9r-c5xc","title":"The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON...","description":"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.","status":"published","published":"2026-07-06T12:31:30Z","modified":"2026-07-06T12:31:37Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-707"],"updated_at":"2026-11-02T15:09:17.527527Z"}],"nvd":[{"id":"CVE-2026-4249","description":"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.","status":"published","published":"2026-07-06T11:16:30.433Z","modified":"2026-07-09T13:04:57.54Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-707"],"updated_at":"2026-11-02T14:12:28.040501Z"}]}}