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CVE-2026-3418

Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution

Published: Aug 6, 2026Updated: Aug 7, 2026 Sources: CVE List NVDCWE-434
9.1CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 58.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

The System REST API accepts user-supplied file uploads without enforcing sufficient validation on the file type or destination, allowing files to be written to arbitrary server-accessible locations. Exploitation requires authenticated administrative access with publisher privileges. Successful exploitation permits an authenticated publisher to upload files to server-accessible locations. Depending on the deployment environment and how uploaded files are handled, this could lead to the execution of uploaded content, potentially resulting in remote code execution.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-434

Affected Products

WSO2
commercial·IN
WSO2 API ManagerOn-prem
Cloud & SaaS / api-gateway
WSO2 Traffic ManagerOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
WSO2 API Control PlaneOn-premWeb App
Cloud & SaaS / api-gateway
WSO2 Universal GatewayOn-premSecurity Product
Security Products / secure-gateway-vpn
WSO2 Carbon API Management Implementation
Cloud & SaaS / api-gateway
WSO2 API Manager Publisher REST API V4On-prem
Cloud & SaaS / api-gateway
WSO2 Carbon API Management APIOn-premWeb App
Cloud & SaaS / api-gateway

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
View detailed technique mapping

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/
security.docs.wso2.com

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