{"id":"CVE-2021-27340","aliases":["EUVD-2021-14100","GHSA-6ph7-3cx8-q7xh"],"status":"published","title":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in...","description":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the \"opt\" parameter.","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":0.01099,"percentile":0.66073,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-16T13:48:33Z","modified":"2026-10-24T10:47:44Z","products":[{"vendor":"os4ed","product":"opensis"}],"references":[{"url":"https://github.com/OS4ED/openSIS-Classic/issues/158","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/OS4ED/openSIS-Classic/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://github.com/OS4ED/openSIS-Classic/commit/f78407d5291c686c3f416073dcb9143f3a3d5489#diff-24b751f2072f058259d033016938101f9fa29884ebcc09ce7eb88def3421e5ba","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27340"},{"url":"http://opensis.com"},{"url":"http://os4ed.com"},{"url":"https://github.com/advisories/GHSA-6ph7-3cx8-q7xh"}],"sources":{"cve":[{"id":"CVE-2021-27340","description":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the \"opt\" parameter.","status":"published","published":"2021-09-16T13:48:33Z","modified":"2024-08-03T20:48:16.073Z","updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-14100","description":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the \"opt\" parameter.","status":"published","published":"2021-09-16T13:48:33Z","modified":"2024-08-03T20:48:16Z","updated_at":"2026-11-03T03:24:49.368497Z"}],"ghsa":[{"id":"GHSA-6ph7-3cx8-q7xh","title":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in...","description":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the \"opt\" parameter.","status":"published","published":"2022-05-24T19:14:51Z","modified":"2023-01-30T05:02:08Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:34.16886Z"}],"nvd":[{"id":"CVE-2021-27340","description":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the \"opt\" parameter.","status":"published","published":"2021-09-16T14:15:07.41Z","modified":"2026-06-17T03:44:39.91Z","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":"2026-11-02T14:06:58.502206Z"}],"osv":[{"id":"CVE-2021-27340","description":"OpenSIS Community Edition version \u003c= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the \"opt\" parameter.","status":"published","published":"2021-09-16T14:15:07.41Z","modified":"2026-10-24T10:47:44.977800508Z","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"}],"updated_at":"2026-11-02T15:44:18.778776Z"}]}}