CVE-2026-4249Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption
Updated under an hour ago ()
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It affects WSO2 Universal Gateway and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Weakness (CWE)
- CWE-707
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WSO2
- NVD analysis
- Analyzed
- Record last updated
- Jul 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
WSO2 WSO2 Universal Gateway wso2:universal_gateway (from the name) | from 4.5.0 before 4.5.0.54; from 4.6.0 before 4.6.0.18; from 4.7.0 before 4.7.0.2 | CNA record |
WSO2 WSO2 Traffic Manager wso2:traffic_manager (from the name) | from 4.5.0 before 4.5.0.53; from 4.6.0 before 4.6.0.18; from 4.7.0 before 4.7.0.2 | CNA record |
WSO2 WSO2 API Control Plane wso2:api_control_plane (from the name) | from 4.5.0 before 4.5.0.55; from 4.6.0 before 4.6.0.19; from 4.7.0 before 4.7.0.2 | CNA record |
WSO2 WSO2 API Manager wso2:api_manager (from the name) | before 3.2.0 status unknown; from 3.2.0 before 3.2.0.470; from 3.2.1 before 3.2.1.89; from 4.0.0 before 4.0.0.390; from 4.1.0 before 4.1.0.254; from 4.2.0 before 4.2.0.194; from 4.3.0 before 4.3.0.105; from 4.4.0 before 4.4.0.69; and 3 more ranges | CNA record |
wso2 api_control_plane wso2:api_control_plane | from 4.5.0 before 4.5.0.55; from 4.6.0 before 4.6.0.19 | NVD |
wso2 api_manager wso2:api_manager | from 4.0.0 before 4.0.0.390; from 4.1.0 before 4.1.0.254; from 4.2.0 before 4.2.0.194; from 4.3.0 before 4.3.0.105; from 4.4.0 before 4.4.0.69; from 4.5.0 before 4.5.0.54; from 4.6.0 before 4.6.0.18 | NVD |
wso2 traffic_manager wso2:traffic_manager | from 4.5.0 before 4.5.0.53; from 4.6.0 before 4.6.0.18 | NVD |
wso2 universal_gateway wso2:universal_gateway | from 4.5.0 before 4.5.0.54; from 4.6.0 before 4.6.0.18 | NVD |
References
- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.