{"id":"CVE-2021-28998","aliases":["EUVD-2021-15645","GHSA-h6jm-ghq6-38cg"],"status":"published","title":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers...","description":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01294,"percentile":0.70688,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2023-05-08T00:00:00Z","modified":"2026-06-17T03:47:07Z","products":[{"vendor":"cmsmadesimple","product":"cms_made_simple"}],"references":[{"url":"https://seclists.org/fulldisclosure/2021/Mar/50","tags":["x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/file_upload_RCE/File_upload_to_RCE.md","tags":["x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28998"},{"url":"https://github.com/advisories/GHSA-h6jm-ghq6-38cg"}],"sources":{"cve":[{"id":"CVE-2021-28998","description":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.","status":"published","published":"2023-05-08T00:00:00Z","modified":"2025-01-29T14:51:27.978Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-15645","description":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.","status":"published","published":"2023-05-08T00:00:00Z","modified":"2025-01-29T14:51:27Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:10.386162Z"}],"ghsa":[{"id":"GHSA-h6jm-ghq6-38cg","title":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers...","description":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.","status":"published","published":"2023-05-08T15:30:18Z","modified":"2024-04-04T03:50:34Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:56:18.466724Z"}],"nvd":[{"id":"CVE-2021-28998","description":"File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.","status":"published","published":"2023-05-08T14:15:10.707Z","modified":"2026-06-17T03:47:07.75Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}