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TI-2026-03696 Aliases CVE-2026-4249GHSA-7469-8h9r-c5xc

Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2…

Priority MEDIUM 44CWE-707Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00557 46th percentileScored 2026-11-07
Fix Fixed WSO2 Universal Gateway (WSO2): 4.5.0.54, 4.6.0.18, 4.7.0.2WSO2 Traffic Manager (WSO2): 4.5.0.53, 4.6.0.18, 4.7.0.2+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WSO2WSO2 Universal Gateway4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18; 4.7.0 to before 4.7.0.24.5.0.54, 4.6.0.18, 4.7.0.2Patch availableCNA
WSO2WSO2 Traffic Manager4.5.0 to before 4.5.0.53; 4.6.0 to before 4.6.0.18; 4.7.0 to before 4.7.0.24.5.0.53, 4.6.0.18, 4.7.0.2Patch availableCNA
WSO2WSO2 API Control Plane4.5.0 to before 4.5.0.55; 4.6.0 to before 4.6.0.19; 4.7.0 to before 4.7.0.24.5.0.55, 4.6.0.19, 4.7.0.2Patch availableCNA
WSO2WSO2 API Manager3.2.0 to before 3.2.0.470; 3.2.1 to before 3.2.1.89; 4.0.0 to before 4.0.0.390; 4.1.0 to before 4.1.0.254; 4.2.0 to before 4.2.0.194; 4.3.0 to before 4.3.0.105; 4.4.0 to before 4.4.0.69; 4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18; 4.7.0 to before 4.7.0.23.2.0.470, 3.2.1.89, 4.0.0.390, 4.1.0.254, 4.2.0.194, 4.3.0.105, 4.4.0.69, 4.5.0.54, 4.6.0.18, 4.7.0.2Patch availableCNA
  • WSO2 Universal Gateway VendorWSO2 Affected 4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18; 4.7.0 to before 4.7.0.2 Fixed in 4.5.0.54, 4.6.0.18, 4.7.0.2 Patch available CNA
  • WSO2 Traffic Manager VendorWSO2 Affected 4.5.0 to before 4.5.0.53; 4.6.0 to before 4.6.0.18; 4.7.0 to before 4.7.0.2 Fixed in 4.5.0.53, 4.6.0.18, 4.7.0.2 Patch available CNA
  • WSO2 API Control Plane VendorWSO2 Affected 4.5.0 to before 4.5.0.55; 4.6.0 to before 4.6.0.19; 4.7.0 to before 4.7.0.2 Fixed in 4.5.0.55, 4.6.0.19, 4.7.0.2 Patch available CNA
  • WSO2 API Manager VendorWSO2 Affected 3.2.0 to before 3.2.0.470; 3.2.1 to before 3.2.1.89; 4.0.0 to before 4.0.0.390; 4.1.0 to before 4.1.0.254; 4.2.0 to before 4.2.0.194; 4.3.0 to before 4.3.0.105; 4.4.0 to before 4.4.0.69; 4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18; 4.7.0 to before 4.7.0.2 Fixed in 3.2.0.470, 3.2.1.89, 4.0.0.390, 4.1.0.254, 4.2.0.194, 4.3.0.105, 4.4.0.69, 4.5.0.54, 4.6.0.18, 4.7.0.2 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:wso2:api_control_plane:*:*:*:*:*:*:*:*4.5.0 to before 4.5.0.55; 4.6.0 to before 4.6.0.19VulnerableWSO2
cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*4.0.0 to before 4.0.0.390; 4.1.0 to before 4.1.0.254; 4.2.0 to before 4.2.0.194; 4.3.0 to before 4.3.0.105; 4.4.0 to before 4.4.0.69; 4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18VulnerableWSO2
cpe:2.3:a:wso2:traffic_manager:*:*:*:*:*:*:*:*4.5.0 to before 4.5.0.53; 4.6.0 to before 4.6.0.18VulnerableWSO2
cpe:2.3:a:wso2:universal_gateway:*:*:*:*:*:*:*:*4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18VulnerableWSO2
  • cpe:2.3:a:wso2:api_control_plane:*:*:*:*:*:*:*:* Versions 4.5.0 to before 4.5.0.55; 4.6.0 to before 4.6.0.19 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.0.0.390; 4.1.0 to before 4.1.0.254; 4.2.0 to before 4.2.0.194; 4.3.0 to before 4.3.0.105; 4.4.0 to before 4.4.0.69; 4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:traffic_manager:*:*:*:*:*:*:*:* Versions 4.5.0 to before 4.5.0.53; 4.6.0 to before 4.6.0.18 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:universal_gateway:*:*:*:*:*:*:*:* Versions 4.5.0 to before 4.5.0.54; 4.6.0 to before 4.6.0.18 Vulnerable ·WSO2

Remediation

  • Fix · CNA WSO2 Universal Gateway (WSO2) Fixed in 4.5.0.54, 4.6.0.18, 4.7.0.2
  • Fix · CNA WSO2 Traffic Manager (WSO2) Fixed in 4.5.0.53, 4.6.0.18, 4.7.0.2
  • Fix · CNA WSO2 API Control Plane (WSO2) Fixed in 4.5.0.55, 4.6.0.19, 4.7.0.2
  • Fix · CNA WSO2 API Manager (WSO2) Fixed in 3.2.0.470, 3.2.1.89, 4.0.0.390, 4.1.0.254, 4.2.0.194, 4.3.0.105, 4.4.0.69, 4.5.0.54, 4.6.0.18, 4.7.0.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4249
  2. 2026-10-03 Alias added: GHSA-7469-8h9r-c5xc

References

Advisory 1

  • TI-2026-04755 Authentication Bypass via JWT Algorithm Mismatch in Multiple WSO2 Products Allows Account Takeover KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-13722 Account Takeover via Conditional Authentication Script Logic in Multiple WSO2 Products CVSS 3.1CRITICAL 9.4
  • TI-2025-09712 Potential Broken Access Control in Multiple WSO2 Products via System REST APIs CVSS 3.1CRITICAL 9.8
  • TI-2025-08391 Improper Privilege Management in Multiple WSO2 API Manager via keymanager-operations DCR Endpoint CVSS 3.1CRITICAL 9.8
  • TI-2026-01411 Privilege Escalation via System REST APIs in Multiple WSO2 Products Permits Admin Account Takeover CVSS 3.1CRITICAL 9.8
  • TI-2025-08536 Improper Certificate-Based Authentication Enforcement in Multiple WSO2 Products CVSS 3.1CRITICAL 9.8
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences