Vulnerability Details CVE-2026-5430
The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported algorithm, which is then incorrectly validated, leading to unauthorized access.
Successful exploitation of this vulnerability may result in unauthorized access to the system, including the potential compromise of administrative accounts and full account takeover. The CVSS score is adjusted to 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) in single-tenant deployments, reflecting that the impact is contained within a single security authority boundary.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 28.6%
CVSS Severity
CVSS v3 Score 10.0
Proposed Action
WSO2 API Control Plane, API Manager, Traffic Manager & Universal Gateway contain a path traversal vulnerability that could allow for unrestricted file upload and lead to remote code execution.
Ransomware Campaign
Unknown
Products affected by CVE-2026-5430
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cpe:2.3:a:wso2:api_control_plane:4.5.0
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cpe:2.3:a:wso2:api_control_plane:4.5.0.10
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cpe:2.3:a:wso2:api_control_plane:4.5.0.18
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cpe:2.3:a:wso2:api_control_plane:4.5.0.21
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cpe:2.3:a:wso2:api_control_plane:4.5.0.29
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cpe:2.3:a:wso2:api_control_plane:4.5.0.39
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cpe:2.3:a:wso2:api_control_plane:4.5.0.44
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cpe:2.3:a:wso2:api_control_plane:4.5.0.45
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cpe:2.3:a:wso2:api_control_plane:4.5.0.49
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cpe:2.3:a:wso2:api_control_plane:4.5.0.50
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cpe:2.3:a:wso2:api_control_plane:4.5.0.55
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cpe:2.3:a:wso2:api_control_plane:4.5.0.56
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cpe:2.3:a:wso2:api_control_plane:4.6.0
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cpe:2.3:a:wso2:api_control_plane:4.6.0.13
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cpe:2.3:a:wso2:api_control_plane:4.6.0.14
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cpe:2.3:a:wso2:api_control_plane:4.6.0.19
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cpe:2.3:a:wso2:api_control_plane:4.6.0.20
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cpe:2.3:a:wso2:api_control_plane:4.6.0.3
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cpe:2.3:a:wso2:api_control_plane:4.6.0.8
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cpe:2.3:a:wso2:api_control_plane:4.6.0.9
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cpe:2.3:a:wso2:api_manager:4.2.0
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cpe:2.3:a:wso2:api_manager:4.2.0.100
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cpe:2.3:a:wso2:api_manager:4.2.0.108
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cpe:2.3:a:wso2:api_manager:4.2.0.127
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cpe:2.3:a:wso2:api_manager:4.2.0.138
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cpe:2.3:a:wso2:api_manager:4.2.0.144
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cpe:2.3:a:wso2:api_manager:4.2.0.150
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cpe:2.3:a:wso2:api_manager:4.2.0.153
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cpe:2.3:a:wso2:api_manager:4.2.0.156
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cpe:2.3:a:wso2:api_manager:4.2.0.157
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cpe:2.3:a:wso2:api_manager:4.2.0.164
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cpe:2.3:a:wso2:api_manager:4.2.0.169
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cpe:2.3:a:wso2:api_manager:4.2.0.171
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cpe:2.3:a:wso2:api_manager:4.2.0.173
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cpe:2.3:a:wso2:api_manager:4.2.0.176
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cpe:2.3:a:wso2:api_manager:4.2.0.178
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cpe:2.3:a:wso2:api_manager:4.2.0.179
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cpe:2.3:a:wso2:api_manager:4.2.0.182
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cpe:2.3:a:wso2:api_manager:4.2.0.183
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cpe:2.3:a:wso2:api_manager:4.2.0.184
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cpe:2.3:a:wso2:api_manager:4.2.0.188
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cpe:2.3:a:wso2:api_manager:4.2.0.189
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cpe:2.3:a:wso2:api_manager:4.2.0.194
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cpe:2.3:a:wso2:api_manager:4.2.0.195
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cpe:2.3:a:wso2:api_manager:4.2.0.80
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cpe:2.3:a:wso2:api_manager:4.3.0
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cpe:2.3:a:wso2:api_manager:4.3.0.100
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cpe:2.3:a:wso2:api_manager:4.3.0.105
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cpe:2.3:a:wso2:api_manager:4.3.0.106
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cpe:2.3:a:wso2:api_manager:4.3.0.16
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cpe:2.3:a:wso2:api_manager:4.3.0.39
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cpe:2.3:a:wso2:api_manager:4.3.0.51
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cpe:2.3:a:wso2:api_manager:4.3.0.55
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cpe:2.3:a:wso2:api_manager:4.3.0.57
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cpe:2.3:a:wso2:api_manager:4.3.0.65
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cpe:2.3:a:wso2:api_manager:4.3.0.66
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cpe:2.3:a:wso2:api_manager:4.3.0.67
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cpe:2.3:a:wso2:api_manager:4.3.0.70
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cpe:2.3:a:wso2:api_manager:4.3.0.74
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cpe:2.3:a:wso2:api_manager:4.3.0.81
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cpe:2.3:a:wso2:api_manager:4.3.0.83
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cpe:2.3:a:wso2:api_manager:4.3.0.85
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cpe:2.3:a:wso2:api_manager:4.3.0.88
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cpe:2.3:a:wso2:api_manager:4.3.0.90
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cpe:2.3:a:wso2:api_manager:4.3.0.91
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cpe:2.3:a:wso2:api_manager:4.3.0.93
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cpe:2.3:a:wso2:api_manager:4.3.0.94
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cpe:2.3:a:wso2:api_manager:4.3.0.95
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cpe:2.3:a:wso2:api_manager:4.3.0.99
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cpe:2.3:a:wso2:api_manager:4.4.0
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cpe:2.3:a:wso2:api_manager:4.4.0.28
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cpe:2.3:a:wso2:api_manager:4.4.0.29
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cpe:2.3:a:wso2:api_manager:4.4.0.30
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cpe:2.3:a:wso2:api_manager:4.4.0.33
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cpe:2.3:a:wso2:api_manager:4.4.0.38
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cpe:2.3:a:wso2:api_manager:4.4.0.45
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cpe:2.3:a:wso2:api_manager:4.4.0.47
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cpe:2.3:a:wso2:api_manager:4.4.0.49
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cpe:2.3:a:wso2:api_manager:4.4.0.52
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cpe:2.3:a:wso2:api_manager:4.4.0.54
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cpe:2.3:a:wso2:api_manager:4.4.0.55
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cpe:2.3:a:wso2:api_manager:4.4.0.57
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cpe:2.3:a:wso2:api_manager:4.4.0.58
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cpe:2.3:a:wso2:api_manager:4.4.0.59
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cpe:2.3:a:wso2:api_manager:4.4.0.63
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cpe:2.3:a:wso2:api_manager:4.4.0.64
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cpe:2.3:a:wso2:api_manager:4.4.0.69
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cpe:2.3:a:wso2:api_manager:4.4.0.70
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cpe:2.3:a:wso2:api_manager:4.5.0
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cpe:2.3:a:wso2:api_manager:4.5.0.11
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cpe:2.3:a:wso2:api_manager:4.5.0.12
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cpe:2.3:a:wso2:api_manager:4.5.0.14
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cpe:2.3:a:wso2:api_manager:4.5.0.17
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cpe:2.3:a:wso2:api_manager:4.5.0.20
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cpe:2.3:a:wso2:api_manager:4.5.0.28
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cpe:2.3:a:wso2:api_manager:4.5.0.30
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cpe:2.3:a:wso2:api_manager:4.5.0.32
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cpe:2.3:a:wso2:api_manager:4.5.0.35
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cpe:2.3:a:wso2:api_manager:4.5.0.37
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cpe:2.3:a:wso2:api_manager:4.5.0.38
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cpe:2.3:a:wso2:api_manager:4.5.0.41
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cpe:2.3:a:wso2:api_manager:4.5.0.43
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cpe:2.3:a:wso2:api_manager:4.5.0.44
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cpe:2.3:a:wso2:api_manager:4.5.0.48
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cpe:2.3:a:wso2:api_manager:4.5.0.49
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cpe:2.3:a:wso2:api_manager:4.5.0.54
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cpe:2.3:a:wso2:api_manager:4.5.0.55
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cpe:2.3:a:wso2:api_manager:4.5.0.9
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cpe:2.3:a:wso2:api_manager:4.6.0
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cpe:2.3:a:wso2:api_manager:4.6.0.1
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cpe:2.3:a:wso2:api_manager:4.6.0.12
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cpe:2.3:a:wso2:api_manager:4.6.0.13
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cpe:2.3:a:wso2:api_manager:4.6.0.18
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cpe:2.3:a:wso2:api_manager:4.6.0.19
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cpe:2.3:a:wso2:api_manager:4.6.0.2
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cpe:2.3:a:wso2:api_manager:4.6.0.3
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cpe:2.3:a:wso2:api_manager:4.6.0.6
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cpe:2.3:a:wso2:api_manager:4.6.0.7
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cpe:2.3:a:wso2:api_manager:4.6.0.8
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cpe:2.3:a:wso2:traffic_manager:4.5.0
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cpe:2.3:a:wso2:traffic_manager:4.5.0.17
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cpe:2.3:a:wso2:traffic_manager:4.5.0.19
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cpe:2.3:a:wso2:traffic_manager:4.5.0.27
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cpe:2.3:a:wso2:traffic_manager:4.5.0.37
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cpe:2.3:a:wso2:traffic_manager:4.5.0.42
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cpe:2.3:a:wso2:traffic_manager:4.5.0.43
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cpe:2.3:a:wso2:traffic_manager:4.5.0.47
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cpe:2.3:a:wso2:traffic_manager:4.5.0.48
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cpe:2.3:a:wso2:traffic_manager:4.5.0.53
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cpe:2.3:a:wso2:traffic_manager:4.5.0.54
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cpe:2.3:a:wso2:traffic_manager:4.5.0.9
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cpe:2.3:a:wso2:traffic_manager:4.6.0
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cpe:2.3:a:wso2:traffic_manager:4.6.0.12
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cpe:2.3:a:wso2:traffic_manager:4.6.0.13
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cpe:2.3:a:wso2:traffic_manager:4.6.0.18
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cpe:2.3:a:wso2:traffic_manager:4.6.0.19
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cpe:2.3:a:wso2:traffic_manager:4.6.0.3
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cpe:2.3:a:wso2:traffic_manager:4.6.0.7
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cpe:2.3:a:wso2:traffic_manager:4.6.0.8
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cpe:2.3:a:wso2:universal_gateway:4.5.0
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cpe:2.3:a:wso2:universal_gateway:4.5.0.17
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cpe:2.3:a:wso2:universal_gateway:4.5.0.19
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cpe:2.3:a:wso2:universal_gateway:4.5.0.27
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cpe:2.3:a:wso2:universal_gateway:4.5.0.37
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cpe:2.3:a:wso2:universal_gateway:4.5.0.42
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cpe:2.3:a:wso2:universal_gateway:4.5.0.44
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cpe:2.3:a:wso2:universal_gateway:4.5.0.48
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cpe:2.3:a:wso2:universal_gateway:4.5.0.49
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cpe:2.3:a:wso2:universal_gateway:4.5.0.54
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cpe:2.3:a:wso2:universal_gateway:4.5.0.55
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cpe:2.3:a:wso2:universal_gateway:4.5.0.9
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cpe:2.3:a:wso2:universal_gateway:4.6.0
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cpe:2.3:a:wso2:universal_gateway:4.6.0.12
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cpe:2.3:a:wso2:universal_gateway:4.6.0.13
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cpe:2.3:a:wso2:universal_gateway:4.6.0.18
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cpe:2.3:a:wso2:universal_gateway:4.6.0.19
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cpe:2.3:a:wso2:universal_gateway:4.6.0.3
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cpe:2.3:a:wso2:universal_gateway:4.6.0.7
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cpe:2.3:a:wso2:universal_gateway:4.6.0.8