CVE-2026-4249 (GCVE-0-2026-4249)
Vulnerability from cvelistv5 – Published: 2026-07-06 10:16 – Updated: 2026-07-06 11:03
VLAI
Title
Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption
Summary
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.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-707 - Use of Out-of-Scope Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.docs.wso2.com/en/latest/security… | vendor-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| WSO2 | WSO2 Universal Gateway |
Affected:
4.5.0 , < 4.5.0.54
(custom)
Affected: 4.6.0 , < 4.6.0.18 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) |
|
| WSO2 | WSO2 Traffic Manager |
Affected:
4.5.0 , < 4.5.0.53
(custom)
Affected: 4.6.0 , < 4.6.0.18 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) |
|
| WSO2 | WSO2 API Control Plane |
Affected:
4.5.0 , < 4.5.0.55
(custom)
Affected: 4.6.0 , < 4.6.0.19 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) |
|
| WSO2 | WSO2 API Manager |
Unknown:
0 , < 3.2.0
(custom)
Affected: 3.2.0 , < 3.2.0.470 (custom) Affected: 3.2.1 , < 3.2.1.89 (custom) Affected: 4.0.0 , < 4.0.0.390 (custom) Affected: 4.1.0 , < 4.1.0.254 (custom) Affected: 4.2.0 , < 4.2.0.194 (custom) Affected: 4.3.0 , < 4.3.0.105 (custom) Affected: 4.4.0 , < 4.4.0.69 (custom) Affected: 4.5.0 , < 4.5.0.54 (custom) Affected: 4.6.0 , < 4.6.0.18 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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