8.6

CVE-2026-4249

Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption

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.

Successful 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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Wso2 ≫ Api Control Plane Version >= 4.5.0 < 4.5.0.55
Wso2 ≫ Api Control Plane Version >= 4.6.0 < 4.6.0.19
Wso2 ≫ Api Manager Version >= 4.0.0 < 4.0.0.390
Wso2 ≫ Api Manager Version >= 4.1.0 < 4.1.0.254
Wso2 ≫ Api Manager Version >= 4.2.0 < 4.2.0.194
Wso2 ≫ Api Manager Version >= 4.3.0 < 4.3.0.105
Wso2 ≫ Api Manager Version >= 4.4.0 < 4.4.0.69
Wso2 ≫ Api Manager Version >= 4.5.0 < 4.5.0.54
Wso2 ≫ Api Manager Version >= 4.6.0 < 4.6.0.18
Wso2 ≫ Traffic Manager Version >= 4.5.0 < 4.5.0.53
Wso2 ≫ Traffic Manager Version >= 4.6.0 < 4.6.0.18
Wso2 ≫ Universal Gateway Version >= 4.5.0 < 4.5.0.54
Wso2 ≫ Universal Gateway Version >= 4.6.0 < 4.6.0.18
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.34% 0.259
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
ed10eef1-636d-4fbe-9993-6890dfa878f8 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-707 Improper Neutralization

The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component.

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/
Vendor Advisory