{"id":"CVE-2021-40902","aliases":["EUVD-2021-28057","GHSA-4xv8-gg8w-3v3g"],"status":"published","title":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\"...","description":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\" option through the index page.","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":"2026-11-09","score":0.00487,"percentile":0.42214,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2022-06-13T12:20:08Z","modified":"2026-10-20T10:54:56Z","products":[{"vendor":"flatcore","product":"flatcore-cms"}],"references":[{"url":"https://github.com/flatCore/flatCore-CMS/issues/57","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40902"},{"url":"https://github.com/advisories/GHSA-4xv8-gg8w-3v3g"}],"sources":{"cve":[{"id":"CVE-2021-40902","description":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\" option through the index page.","status":"published","published":"2022-06-13T12:20:08Z","modified":"2024-08-04T02:51:07.787Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-28057","description":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\" option through the index page.","status":"published","published":"2022-06-13T12:20:08Z","modified":"2024-08-04T02:51:07Z","updated_at":"2026-11-03T03:24:19.692229Z"}],"ghsa":[{"id":"GHSA-4xv8-gg8w-3v3g","title":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\"...","description":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\" option through the index page.","status":"published","published":"2022-06-14T00:00:35Z","modified":"2023-01-27T05:03:56Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:42:21.502511Z"}],"nvd":[{"id":"CVE-2021-40902","description":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\" option through the index page.","status":"published","published":"2022-06-13T13:15:09.797Z","modified":"2026-06-17T04:07:37.273Z","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-79"],"updated_at":"2026-11-02T14:07:06.501652Z"}],"osv":[{"id":"CVE-2021-40902","description":"flatCore-CMS version 2.0.8 is affected by Cross Site Scripting (XSS) in the \"Create New Page\" option through the index page.","status":"published","published":"2022-06-13T13:15:09.797Z","modified":"2026-10-20T10:54:56.855259616Z","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"}],"updated_at":"2026-11-02T15:44:21.249056Z"}]}}