{"id":"CVE-2021-34357","aliases":["EUVD-2021-21017","GHSA-gfgx-cxc3-v57c"],"status":"published","title":"Reflected XSS Vulnerability in QmailAgent","description":"A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later","severity":{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00712,"percentile":0.54025,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-11-13T00:50:10Z","modified":"2026-06-17T03:55:42Z","products":[{"vendor":"qnap","product":"qmailagent"},{"vendor":"qnap systems inc.","product":"qmailagent"}],"references":[{"url":"https://www.qnap.com/en/security-advisory/qsa-21-47","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34357"},{"url":"https://github.com/advisories/GHSA-gfgx-cxc3-v57c"}],"sources":{"cve":[{"id":"CVE-2021-34357","title":"Reflected XSS Vulnerability in QmailAgent","description":"A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later","status":"published","published":"2021-11-13T00:50:10.221Z","modified":"2024-09-17T02:15:40.656Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-21017","description":"A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later","status":"published","published":"2021-11-13T00:50:10Z","modified":"2024-09-17T02:15:40Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:28:42.412483Z"}],"ghsa":[{"id":"GHSA-gfgx-cxc3-v57c","title":"A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running...","description":"A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later","status":"published","published":"2022-05-24T19:20:37Z","modified":"2023-01-30T05:03:53Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:55.674273Z"}],"nvd":[{"id":"CVE-2021-34357","description":"A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later","status":"published","published":"2021-11-13T01:15:07.557Z","modified":"2026-06-17T03:55:42.827Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N","level":"medium","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"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}