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TI-2026-02951 Aliases CVE-2026-3418GHSA-xx79-g5wr-vq89

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

Priority MEDIUM 43CWE-434Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00761 55th percentileScored 2026-11-08
Fix Fixed WSO2 API Manager (WSO2): 4.4.0.67, 4.5.0.52, 4.6.0.16WSO2 Traffic Manager (WSO2): 4.5.0.51, 4.6.0.16+5 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 API Manager4.4.0 to before 4.4.0.67; 4.5.0 to before 4.5.0.52; 4.6.0 to before 4.6.0.164.4.0.67, 4.5.0.52, 4.6.0.16Patch availableCNA
WSO2WSO2 Traffic Manager4.5.0 to before 4.5.0.51; 4.6.0 to before 4.6.0.164.5.0.51, 4.6.0.16Patch availableCNA
WSO2WSO2 API Control Plane4.5.0 to before 4.5.0.53; 4.6.0 to before 4.6.0.174.5.0.53, 4.6.0.17Patch availableCNA
WSO2WSO2 Universal Gateway4.5.0 to before 4.5.0.52; 4.6.0 to before 4.6.0.164.5.0.52, 4.6.0.16Patch availableCNA
WSO2WSO2 Carbon API Management Implementation9.30.67 to before 9.30.67.156; 9.31.86 to before 9.31.86.141; 9.32.147 to before 9.32.147.449.30.67.156, 9.31.86.141, 9.32.147.44, 9.33.104Patch availableCNA
WSO2WSO2 API Manager Publisher REST API V49.30.67 to before 9.30.67.156; 9.31.86 to before 9.31.86.141; 9.32.147 to before 9.32.147.449.30.67.156, 9.31.86.141, 9.32.147.44, 9.33.104Patch availableCNA
WSO2WSO2 Carbon API Management API9.30.67 to before 9.30.67.1569.30.67.156, 9.33.104Patch availableCNA
  • WSO2 API Manager VendorWSO2 Affected 4.4.0 to before 4.4.0.67; 4.5.0 to before 4.5.0.52; 4.6.0 to before 4.6.0.16 Fixed in 4.4.0.67, 4.5.0.52, 4.6.0.16 Patch available CNA
  • WSO2 Traffic Manager VendorWSO2 Affected 4.5.0 to before 4.5.0.51; 4.6.0 to before 4.6.0.16 Fixed in 4.5.0.51, 4.6.0.16 Patch available CNA
  • WSO2 API Control Plane VendorWSO2 Affected 4.5.0 to before 4.5.0.53; 4.6.0 to before 4.6.0.17 Fixed in 4.5.0.53, 4.6.0.17 Patch available CNA
  • WSO2 Universal Gateway VendorWSO2 Affected 4.5.0 to before 4.5.0.52; 4.6.0 to before 4.6.0.16 Fixed in 4.5.0.52, 4.6.0.16 Patch available CNA
  • WSO2 Carbon API Management Implementation VendorWSO2 Affected 9.30.67 to before 9.30.67.156; 9.31.86 to before 9.31.86.141; 9.32.147 to before 9.32.147.44 Fixed in 9.30.67.156, 9.31.86.141, 9.32.147.44, 9.33.104 Patch available CNA
  • WSO2 API Manager Publisher REST API V4 VendorWSO2 Affected 9.30.67 to before 9.30.67.156; 9.31.86 to before 9.31.86.141; 9.32.147 to before 9.32.147.44 Fixed in 9.30.67.156, 9.31.86.141, 9.32.147.44, 9.33.104 Patch available CNA
  • WSO2 Carbon API Management API VendorWSO2 Affected 9.30.67 to before 9.30.67.156 Fixed in 9.30.67.156, 9.33.104 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*——WSO2
  • cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:* Versions — — ·WSO2

Remediation

  • Fix · CNA WSO2 API Manager (WSO2) Fixed in 4.4.0.67, 4.5.0.52, 4.6.0.16
  • Fix · CNA WSO2 Traffic Manager (WSO2) Fixed in 4.5.0.51, 4.6.0.16
  • Fix · CNA WSO2 API Control Plane (WSO2) Fixed in 4.5.0.53, 4.6.0.17
  • Fix · CNA WSO2 Universal Gateway (WSO2) Fixed in 4.5.0.52, 4.6.0.16
  • Fix · CNA WSO2 Carbon API Management Implementation (WSO2) Fixed in 9.30.67.156, 9.31.86.141, 9.32.147.44, 9.33.104
  • Fix · CNA WSO2 API Manager Publisher REST API V4 (WSO2) Fixed in 9.30.67.156, 9.31.86.141, 9.32.147.44, 9.33.104
  • Fix · CNA WSO2 Carbon API Management API (WSO2) Fixed in 9.30.67.156, 9.33.104

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3418
  2. 2026-10-03 Alias added: GHSA-xx79-g5wr-vq89

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-2022-11928 Certain WSO2 products allow unrestricted file upload with resultant remote code execution. KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-18808 An issue was discovered in WSO2 Enterprise Integrator 6.4.0. CVSS 3.1MEDIUM 6.1
  • TI-2020-15069 The Management Console in WSO2 API Manager through 3.1.0 and API Microgateway 2.2.0… CVSS 3.1CRITICAL 9.1
  • TI-2023-15163 A reflected cross-site scripting (XSS) vulnerability in /authenticationendpoint/login.do… CVSS 3.1MEDIUM 6.1
  • TI-2022-04130 WSO2 carbon-registry Advanced Search advancedSearchForm-ajaxprocessor.jsp cross site scripting CVSS 3.1MEDIUM 6.1
See all 186 →

Sources

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