{"id":"CVE-2026-3418","aliases":["EUVD-2026-54209","GHSA-xx79-g5wr-vq89"],"status":"published","title":"Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution","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.\n\nSuccessful 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.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00761,"percentile":0.55567,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2026-08-06T17:32:14Z","modified":"2026-09-23T15:30:30Z","products":[{"vendor":"wso2","product":"wso2 api control plane"},{"vendor":"wso2","product":"wso2 api manager"},{"vendor":"wso2","product":"wso2 api manager publisher rest api v4"},{"vendor":"wso2","product":"wso2 carbon api management api"},{"vendor":"wso2","product":"wso2 carbon api management implementation"},{"vendor":"wso2","product":"wso2 traffic manager"},{"vendor":"wso2","product":"wso2 universal gateway"}],"references":[{"url":"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3418"},{"url":"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146"},{"url":"https://github.com/advisories/GHSA-xx79-g5wr-vq89"}],"sources":{"cve":[{"id":"CVE-2026-3418","title":"Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution","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.\n\nSuccessful 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.","status":"published","published":"2026-08-06T17:32:14.823Z","modified":"2026-09-23T15:30:30.61Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T13:48:58.05327Z"}],"euvd":[{"id":"EUVD-2026-54209","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.\n\nSuccessful 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.","status":"published","published":"2026-08-06T17:32:14Z","modified":"2026-09-23T15:30:30Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T17:28:00.617613Z"}],"ghsa":[{"id":"GHSA-xx79-g5wr-vq89","title":"The System REST API accepts user-supplied file uploads without enforcing sufficient validation on...","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.\n\nSuccessful 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.","status":"published","published":"2026-08-07T00:31:18Z","modified":"2026-08-07T00:31:27Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:10:10.387883Z"}],"nvd":[{"id":"CVE-2026-3418","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.\n\nSuccessful 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.","status":"published","published":"2026-08-06T22:17:03.997Z","modified":"2026-08-31T20:14:36.25Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:12:35.386166Z"}]}}