{"id":"CVE-2020-21494","aliases":["EUVD-2020-14264","GHSA-hvwx-c823-vgxp"],"status":"published","title":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0...","description":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00694,"percentile":0.53377,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-10-04T21:00:36Z","modified":"2026-06-17T03:03:43Z","products":[{"vendor":"xiuno","product":"xiunobbs"}],"references":[{"url":"https://gitee.com/xiuno/xiunobbs/issues/I16BHH","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://github.com/wanghaiwei/xiuno-docker/issues/4","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-21494"},{"url":"https://github.com/advisories/GHSA-hvwx-c823-vgxp"}],"sources":{"cve":[{"id":"CVE-2020-21494","description":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.","status":"published","published":"2021-10-04T21:00:36Z","modified":"2024-08-04T14:30:33.427Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-14264","description":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.","status":"published","published":"2021-10-04T21:00:36Z","modified":"2024-08-04T14:30:33Z","updated_at":"2026-11-03T03:07:23.734565Z"}],"ghsa":[{"id":"GHSA-hvwx-c823-vgxp","title":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0...","description":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.","status":"published","published":"2022-05-24T19:16:23Z","modified":"2023-01-30T05:02:33Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:39.888016Z"}],"nvd":[{"id":"CVE-2020-21494","description":"A cross-site scripting (XSS) vulnerability in the component install\\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.","status":"published","published":"2021-10-04T21:15:12.387Z","modified":"2026-06-17T03:03:43.597Z","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","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":"2026-11-02T14:06:45.704484Z"}]}}