{"id":"CVE-2020-12255","aliases":["EUVD-2020-4569","GHSA-5rv6-786c-qwh8"],"status":"published","title":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file...","description":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.58085,"percentile":0.99097,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2020-05-18T14:05:12Z","modified":"2026-06-17T02:51:31Z","exploits":[{"source":"pocgithub","id":"vishwaraj101/CVE-2020-12255","title":"vishwaraj101/CVE-2020-12255","date":"2021-03-06","url":"https://github.com/vishwaraj101/CVE-2020-12255"}],"products":[{"vendor":"rconfig","product":"rconfig"}],"references":[{"url":"https://gist.github.com/farid007/9f6ad063645d5b1550298c8b9ae953ff","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12255"},{"url":"https://github.com/advisories/GHSA-5rv6-786c-qwh8"}],"sources":{"cve":[{"id":"CVE-2020-12255","description":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.","status":"published","published":"2020-05-18T14:05:12Z","modified":"2024-08-04T11:48:58.362Z","updated_at":"2026-11-02T14:35:52.925152Z"}],"euvd":[{"id":"EUVD-2020-4569","description":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.","status":"published","published":"2020-05-18T14:05:12Z","modified":"2024-08-04T11:48:58Z","updated_at":"2026-11-03T03:07:40.81889Z"}],"ghsa":[{"id":"GHSA-5rv6-786c-qwh8","title":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file...","description":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.","status":"published","published":"2022-05-24T17:18:03Z","modified":"2023-01-29T05:02:42Z","updated_at":"2026-11-02T14:45:09.006349Z"}],"nvd":[{"id":"CVE-2020-12255","description":"rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.","status":"published","published":"2020-05-18T15:15:10.88Z","modified":"2026-06-17T02:51:31.16Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:00.784809Z"}]}}