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CVE-2026-4249

HIGH
8.6
CVSS 3.1
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. 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.

Metadata

CVE ID
CVE-2026-4249
State
PUBLISHED
Assigner
WSO2
Reserved
2026-03-16 05:47 UTC
Published
2026-07-06 10:16 UTC
Last updated
2026-07-06 11:03 UTC
Primary CWE
CWE-707
CWE-707: Use of Out-of-Scope Validation
Vendor / Product
WSO2 / WSO2 Universal Gateway
Sources
cve.org  ·  NVD

Severity & Metrics

8.6 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
partial
Affected products (4)
VendorProductPlatformVersions
WSO2 WSO2 API Control Plane — 4.5.0 < 4.5.0.55, 4.6.0 < 4.6.0.19, 4.7.0 < 4.7.0.2
WSO2 WSO2 API Manager — 0 < 3.2.0, 3.2.0 < 3.2.0.470, 3.2.1 < 3.2.1.89, 4.0.0 < 4.0.0.390 …
WSO2 WSO2 Traffic Manager — 4.5.0 < 4.5.0.53, 4.6.0 < 4.6.0.18, 4.7.0 < 4.7.0.2
WSO2 WSO2 Universal Gateway — 4.5.0 < 4.5.0.54, 4.6.0 < 4.6.0.18, 4.7.0 < 4.7.0.2
Weakness (CWE)
CWESourceDescription
CWE-707 cna CWE-707: Use of Out-of-Scope Validation
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.6 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
References (1)
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