Vulnerability in Wso2 API Control Plane
CVE-2026-4249
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Wso2 API Control Plane
- Wso2 API Manager
- Wso2 Traffic Manager
- Wso2 Universal Gateway
- Wso2 API Control Plane — versions 4.5.0, 4.6.0, 4.7.0
- Wso2 API Manager — versions 0, 3.2.0, 3.2.1
- Wso2 Traffic Manager — versions 4.5.0, 4.6.0, 4.7.0
- Wso2 Universal Gateway — versions 4.5.0, 4.6.0, 4.7.0
Weakness classification (CWE)
References
- ed10eef1-636d-4fbe-9993-6890dfa878f8 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-4249?
- CVE-2026-4249 is a high-severity vulnerability in Wso2 API Control Plane, classified under CWE-707. CVSS score: 8.6/10. Published 2026-07-06.
- How severe is CVE-2026-4249?
- High severity. CVSS v3 base score is 8.6 out of 10.