{"id":"CVE-2026-3418","state":"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.","publishedAt":"2026-08-06T17:32:14.823Z","updatedAt":"2026-09-23T15:30:30.610Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","source":"WSO2"},"assigner":"WSO2","products":["WSO2 WSO2 API Manager","WSO2 WSO2 Traffic Manager","WSO2 WSO2 API Control Plane","WSO2 WSO2 Universal Gateway","WSO2 WSO2 Carbon API Management Implementation","WSO2 WSO2 API Manager Publisher REST API V4","WSO2 WSO2 Carbon API Management API"],"affected":[{"vendor":"WSO2","product":"WSO2 API Manager","defaultStatus":"unaffected","versions":[{"version":"4.4.0","status":"affected","lessThan":"4.4.0.67","versionType":"custom"},{"version":"4.5.0","status":"affected","lessThan":"4.5.0.52","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.16","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Traffic Manager","defaultStatus":"unaffected","versions":[{"version":"4.5.0","status":"affected","lessThan":"4.5.0.51","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.16","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 API Control Plane","defaultStatus":"unaffected","versions":[{"version":"4.5.0","status":"affected","lessThan":"4.5.0.53","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.17","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Universal Gateway","defaultStatus":"unaffected","versions":[{"version":"4.5.0","status":"affected","lessThan":"4.5.0.52","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.16","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Carbon API Management Implementation","packageName":"org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.impl","defaultStatus":"unknown","versions":[{"version":"9.30.67","status":"affected","lessThan":"9.30.67.156","versionType":"custom"},{"version":"9.31.86","status":"affected","lessThan":"9.31.86.141","versionType":"custom"},{"version":"9.32.147","status":"affected","lessThan":"9.32.147.44","versionType":"custom"},{"version":"9.33.104","status":"unaffected","lessThanOrEqual":"*","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 API Manager Publisher REST API V4","packageName":"org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.publisher.v1.common","defaultStatus":"unknown","versions":[{"version":"9.30.67","status":"affected","lessThan":"9.30.67.156","versionType":"custom"},{"version":"9.31.86","status":"affected","lessThan":"9.31.86.141","versionType":"custom"},{"version":"9.32.147","status":"affected","lessThan":"9.32.147.44","versionType":"custom"},{"version":"9.33.104","status":"unaffected","lessThanOrEqual":"*","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Carbon API Management API","packageName":"org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.api","defaultStatus":"unknown","versions":[{"version":"9.30.67","status":"affected","lessThan":"9.30.67.156","versionType":"custom"},{"version":"9.33.104","status":"unaffected","lessThanOrEqual":"*","versionType":"custom"}]}],"references":["https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/"],"weaknesses":["CWE-434"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3418.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3418","state":"PUBLISHED","datePublished":"2026-08-06T17:32:14.823Z","dateUpdated":"2026-09-23T15:30:30.610Z","assignerShortName":"WSO2","assignerOrgId":"ed10eef1-636d-4fbe-9993-6890dfa878f8","dateReserved":"2026-03-01T18:52:59.606Z"},"containers":{"cna":{"title":"Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"WSO2","product":"WSO2 API Manager","defaultStatus":"unaffected","versions":[{"version":"4.4.0","status":"affected","lessThan":"4.4.0.67","versionType":"custom"},{"version":"4.5.0","status":"affected","lessThan":"4.5.0.52","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.16","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Traffic Manager","defaultStatus":"unaffected","versions":[{"version":"4.5.0","status":"affected","lessThan":"4.5.0.51","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.16","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 API Control Plane","defaultStatus":"unaffected","versions":[{"version":"4.5.0","status":"affected","lessThan":"4.5.0.53","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.17","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Universal Gateway","defaultStatus":"unaffected","versions":[{"version":"4.5.0","status":"affected","lessThan":"4.5.0.52","versionType":"custom"},{"version":"4.6.0","status":"affected","lessThan":"4.6.0.16","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Carbon API Management Implementation","packageName":"org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.impl","defaultStatus":"unknown","versions":[{"version":"9.30.67","status":"affected","lessThan":"9.30.67.156","versionType":"custom"},{"version":"9.31.86","status":"affected","lessThan":"9.31.86.141","versionType":"custom"},{"version":"9.32.147","status":"affected","lessThan":"9.32.147.44","versionType":"custom"},{"version":"9.33.104","status":"unaffected","lessThanOrEqual":"*","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 API Manager Publisher REST API V4","packageName":"org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.publisher.v1.common","defaultStatus":"unknown","versions":[{"version":"9.30.67","status":"affected","lessThan":"9.30.67.156","versionType":"custom"},{"version":"9.31.86","status":"affected","lessThan":"9.31.86.141","versionType":"custom"},{"version":"9.32.147","status":"affected","lessThan":"9.32.147.44","versionType":"custom"},{"version":"9.33.104","status":"unaffected","lessThanOrEqual":"*","versionType":"custom"}]},{"vendor":"WSO2","product":"WSO2 Carbon API Management API","packageName":"org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.api","defaultStatus":"unknown","versions":[{"version":"9.30.67","status":"affected","lessThan":"9.30.67.156","versionType":"custom"},{"version":"9.33.104","status":"unaffected","lessThanOrEqual":"*","versionType":"custom"}]}],"references":[{"url":"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"CRITICAL","baseScore":9.1,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-434","lang":"en","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","type":"CWE"}]}],"providerMetadata":{"shortName":"WSO2","orgId":"ed10eef1-636d-4fbe-9993-6890dfa878f8","dateUpdated":"2026-09-23T15:30:30.610Z"},"impacts":[{"capecId":"CAPEC-232","descriptions":[{"lang":"en","value":"CAPEC-232 CAPEC-232: File Upload Vulnerability"}]}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.0","versionEndExcluding":"4.4.0.67"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5.0","versionEndExcluding":"4.5.0.52"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6.0","versionEndExcluding":"4.6.0.16"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5.0","versionEndExcluding":"4.5.0.51"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6.0","versionEndExcluding":"4.6.0.16"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5.0","versionEndExcluding":"4.5.0.53"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6.0","versionEndExcluding":"4.6.0.17"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5.0","versionEndExcluding":"4.5.0.52"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6.0","versionEndExcluding":"4.6.0.16"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_carbon_api_management_implementation:*:*:*:*:*:*:*:*","versionStartIncluding":"9.30.67","versionEndExcluding":"9.30.67.156"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_carbon_api_management_implementation:*:*:*:*:*:*:*:*","versionStartIncluding":"9.31.86","versionEndExcluding":"9.31.86.141"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_carbon_api_management_implementation:*:*:*:*:*:*:*:*","versionStartIncluding":"9.32.147","versionEndExcluding":"9.32.147.44"},{"vulnerable":false,"criteria":"cpe:2.3:a:wso2:wso2_carbon_api_management_implementation:*:*:*:*:*:*:*:*","versionStartIncluding":"9.33.104","versionEndIncluding":"*"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_manager_publisher_rest_api_v4:*:*:*:*:*:*:*:*","versionStartIncluding":"9.30.67","versionEndExcluding":"9.30.67.156"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_manager_publisher_rest_api_v4:*:*:*:*:*:*:*:*","versionStartIncluding":"9.31.86","versionEndExcluding":"9.31.86.141"},{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_api_manager_publisher_rest_api_v4:*:*:*:*:*:*:*:*","versionStartIncluding":"9.32.147","versionEndExcluding":"9.32.147.44"},{"vulnerable":false,"criteria":"cpe:2.3:a:wso2:wso2_api_manager_publisher_rest_api_v4:*:*:*:*:*:*:*:*","versionStartIncluding":"9.33.104","versionEndIncluding":"*"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wso2:wso2_carbon_api_management_api:*:*:*:*:*:*:*:*","versionStartIncluding":"9.30.67","versionEndExcluding":"9.30.67.156"},{"vulnerable":false,"criteria":"cpe:2.3:a:wso2:wso2_carbon_api_management_api:*:*:*:*:*:*:*:*","versionStartIncluding":"9.33.104","versionEndIncluding":"*"}]}]}],"solutions":[{"lang":"en","value":"Follow the instructions given on  https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/#solution https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/#solution","supportingMedia":[{"type":"text/html","base64":false,"value":"<span style=\"background-color: transparent;\">Follow the instructions given on </span><a target=\"_blank\" rel=\"nofollow\" href=\"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/#solution\"><span style=\"background-color: transparent;\">https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5146/#solution</span></a> <br>"}]}],"credits":[{"lang":"en","value":"Thilan Dissanayaka","type":"finder"}],"source":{"advisory":"WSO2-2026-5146","discovery":"INTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-07T17:46:58.452271Z","id":"CVE-2026-3418","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-07T17:47:09.220Z"}}]}}}