{"id":"CVE-2021-28803","aliases":["EUVD-2021-15459","GHSA-5g7h-5qvh-cr9r"],"status":"published","title":"Stored XSS Vulnerability in Q'center","description":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00466,"percentile":0.40643,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79","CWE-80"],"published":"2021-07-01T02:00:21Z","modified":"2026-06-17T03:46:53Z","products":[{"vendor":"qnap","product":"q\\'center"},{"vendor":"qnap systems inc.","product":"q'center"}],"references":[{"url":"https://www.qnap.com/zh-tw/security-advisory/qsa-21-31","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28803"},{"url":"https://github.com/advisories/GHSA-5g7h-5qvh-cr9r"}],"sources":{"cve":[{"id":"CVE-2021-28803","title":"Stored XSS Vulnerability in Q'center","description":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","status":"published","published":"2021-07-01T02:00:21.939Z","modified":"2024-09-16T17:34:26.707Z","cwes":["CWE-80"],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-15459","description":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","status":"published","published":"2021-07-01T02:00:21Z","modified":"2024-09-16T17:34:26Z","updated_at":"2026-11-03T00:55:40.580982Z"}],"ghsa":[{"id":"GHSA-5g7h-5qvh-cr9r","title":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","description":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","status":"published","published":"2022-05-24T19:06:47Z","modified":"2023-01-30T05:00:35Z","cwes":["CWE-79","CWE-80"],"updated_at":"2026-11-02T14:46:14.069279Z"}],"nvd":[{"id":"CVE-2021-28803","description":"This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.","status":"published","published":"2021-07-01T02:15:07.383Z","modified":"2026-06-17T03:46:53.543Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-80","CWE-79"],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}