{"id":"CVE-2021-26628","aliases":["EUVD-2021-13422","GHSA-4hqp-qgvw-892g"],"status":"published","title":"MaxBoard XSS and File Upload Vulnerability","description":"Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00786,"percentile":0.56567,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434","CWE-79"],"published":"2022-04-26T18:21:05Z","modified":"2026-06-17T03:43:35Z","products":[{"vendor":"maxb","product":"maxboard"},{"vendor":"maxboard","product":"maxboard"},{"vendor":"no vendor information","product":"maxboard"}],"references":[{"url":"https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66673","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26628"},{"url":"https://github.com/advisories/GHSA-4hqp-qgvw-892g"}],"sources":{"cve":[{"id":"CVE-2021-26628","title":"MaxBoard XSS and File Upload Vulnerability","description":"Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.","status":"published","published":"2022-04-26T18:21:05Z","modified":"2024-08-03T20:26:25.49Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79","CWE-434"],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13422","description":"Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.","status":"published","published":"2022-04-26T18:21:05Z","modified":"2024-08-03T20:26:25Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:24:51.40664Z"}],"ghsa":[{"id":"GHSA-4hqp-qgvw-892g","title":"Insufficient script validation of the admin page enables XSS, which causes unauthorized users to...","description":"Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.","status":"published","published":"2022-04-27T00:00:20Z","modified":"2023-01-30T05:00:27Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:12.604648Z"}],"nvd":[{"id":"CVE-2021-26628","description":"Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.","status":"published","published":"2022-04-26T19:15:48.733Z","modified":"2026-06-17T03:43:35.543Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79","CWE-434"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}