{"id":"CVE-2020-21359","aliases":["EUVD-2020-14131","GHSA-r72h-j3wg-jrp4"],"status":"published","title":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows...","description":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.","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":0.01733,"percentile":0.77937,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2021-08-11T20:53:54Z","modified":"2026-06-17T03:03:38Z","products":[{"vendor":"maccms","product":"maccms"}],"references":[{"url":"https://github.com/magicblack/maccms10/issues/80","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-21359"},{"url":"https://github.com/advisories/GHSA-r72h-j3wg-jrp4"}],"sources":{"cve":[{"id":"CVE-2020-21359","description":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.","status":"published","published":"2021-08-11T20:53:54Z","modified":"2024-08-04T14:30:31.995Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-14131","description":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.","status":"published","published":"2021-08-11T20:53:54Z","modified":"2024-08-04T14:30:31Z","updated_at":"2026-11-03T03:07:23.734565Z"}],"ghsa":[{"id":"GHSA-r72h-j3wg-jrp4","title":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows...","description":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.","status":"published","published":"2022-05-24T19:10:39Z","modified":"2023-01-30T05:01:26Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:46:24.524248Z"}],"nvd":[{"id":"CVE-2020-21359","description":"An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.","status":"published","published":"2021-08-11T21:15:07.873Z","modified":"2026-06-17T03:03:38.693Z","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":"2026-11-02T14:06:44.292752Z"}]}}