{"id":"CVE-2020-20287","aliases":["EUVD-2020-13074","GHSA-2fqw-v698-338m"],"status":"published","title":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper...","description":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02949,"percentile":0.87343,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2021-02-01T17:38:29Z","modified":"2026-06-17T03:02:56Z","products":[{"vendor":"yccms","product":"yccms"}],"references":[{"url":"http://www.yccms.net/","tags":["x_refsource_MISC","x_transferred","Broken Link","URL Repurposed"]},{"url":"https://blog.jiguang.xyz/posts/remote-code-execution-via-upload-image/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-20287"},{"url":"https://github.com/advisories/GHSA-2fqw-v698-338m"}],"sources":{"cve":[{"id":"CVE-2020-20287","description":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.","status":"published","published":"2021-02-01T17:38:29Z","modified":"2024-08-04T14:15:28.826Z","updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-13074","description":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.","status":"published","published":"2021-02-01T17:38:29Z","modified":"2024-08-04T14:15:28Z","updated_at":"2026-11-03T03:07:24.770982Z"}],"ghsa":[{"id":"GHSA-2fqw-v698-338m","title":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper...","description":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.","status":"published","published":"2022-05-24T17:40:43Z","modified":"2023-01-29T05:06:20Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:46:00.036476Z"}],"nvd":[{"id":"CVE-2020-20287","description":"Unrestricted file upload vulnerability in the yccms 3.3 project. The xhUp function's improper judgment of the request parameters, triggers remote code execution.","status":"published","published":"2021-02-01T18:15:12.857Z","modified":"2026-06-17T03:02:56.387Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:34.188486Z"}]}}