PT-2026-55916 · Wso2 · Wso2 Api Control Plane+3

Published 2026-07-06 · Updated 2026-07-06 · CVE-2026-4249

Mitre

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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.

Fix

Improper Neutralization

Weakness Enumeration

CWE-707

Related Identifiers

CVE-2026-4249

Affected Products

Wso2 Api Control Plane

Wso2 Api Manager

Wso2 Traffic Manager

Wso2 Universal Gateway

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-4249 · Security Note
• https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236 · Vendor Advisory