{"id":"CVE-2020-21005","aliases":["EUVD-2020-13784","GHSA-w6gx-rprc-p2qj"],"status":"published","title":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and...","description":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and upload a picture. Because the upload file type is controllable, the user can modify the upload file type to get webshell.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0081,"percentile":0.57189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2021-06-03T13:54:30Z","modified":"2026-06-17T03:03:29Z","products":[{"vendor":"wellcms","product":"wellcms"}],"references":[{"url":"https://github.com/Computer2200/-/issues/4","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://www.wellcms.cn/read-27.html\u0026\u0026","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-21005"},{"url":"https://github.com/advisories/GHSA-w6gx-rprc-p2qj"}],"sources":{"cve":[{"id":"CVE-2020-21005","description":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and upload a picture. Because the upload file type is controllable, the user can modify the upload file type to get webshell.","status":"published","published":"2021-06-03T13:54:30Z","modified":"2024-08-04T14:22:25.501Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-13784","description":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and upload a picture. Because the upload file type is controllable, the user can modify the upload file type to get webshell.","status":"published","published":"2021-06-03T13:54:30Z","modified":"2024-08-04T14:22:25Z","updated_at":"2026-11-03T03:07:23.734565Z"}],"ghsa":[{"id":"GHSA-w6gx-rprc-p2qj","title":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and...","description":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and upload a picture. Because the upload file type is controllable, the user can modify the upload file type to get webshell.","status":"published","published":"2022-05-24T19:03:57Z","modified":"2023-01-29T05:06:51Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:46:06.412268Z"}],"nvd":[{"id":"CVE-2020-21005","description":"WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and upload a picture. Because the upload file type is controllable, the user can modify the upload file type to get webshell.","status":"published","published":"2021-06-03T14:15:08.613Z","modified":"2026-06-17T03:03:29.887Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:43.288951Z"}]}}