Riskcovery

CVE-2026-4249

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

State
Published
Severity
8.6 High
Published
Jul 6, 2026
Updated
Jul 6, 2026
Reserved
Mar 16, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HWSO2

Weaknesses

  • CWE-707 Use of Out-of-Scope Validation

Affected Products

ProductVersions
WSO2 Universal GatewayWSO2
  • 4.5.0 to before 4.5.0.54Affected
  • 4.6.0 to before 4.6.0.18Affected
  • 4.7.0 to before 4.7.0.2Affected
WSO2 Traffic ManagerWSO2
  • 4.5.0 to before 4.5.0.53Affected
  • 4.6.0 to before 4.6.0.18Affected
  • 4.7.0 to before 4.7.0.2Affected
WSO2 API Control PlaneWSO2
  • 4.5.0 to before 4.5.0.55Affected
  • 4.6.0 to before 4.6.0.19Affected
  • 4.7.0 to before 4.7.0.2Affected
WSO2 API ManagerWSO2
  • before 3.2.0Unknown
  • 3.2.0 to before 3.2.0.470Affected
  • 3.2.1 to before 3.2.1.89Affected
  • 4.0.0 to before 4.0.0.390Affected
  • 4.1.0 to before 4.1.0.254Affected
  • 4.2.0 to before 4.2.0.194Affected
  • 4.3.0 to before 4.3.0.105Affected
  • 4.4.0 to before 4.4.0.69Affected
  • 4.5.0 to before 4.5.0.54Affected
  • 4.6.0 to before 4.6.0.18Affected
  • 4.7.0 to before 4.7.0.2Affected

References

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