{"id":"CVE-2021-40555","aliases":["EUVD-2021-27730","GHSA-rp7v-crhj-652h"],"status":"published","title":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute...","description":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.","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":0.00439,"percentile":0.38441,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2023-02-16T00:00:00Z","modified":"2026-10-20T10:54:56Z","products":[{"vendor":"flatcore","product":"flatcore"}],"references":[{"url":"https://github.com/flatCore/flatCore-CMS/issues/56","tags":["x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40555"},{"url":"https://github.com/advisories/GHSA-rp7v-crhj-652h"}],"sources":{"cve":[{"id":"CVE-2021-40555","description":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.","status":"published","published":"2023-02-16T00:00:00Z","modified":"2025-03-19T15:02:26.927Z","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":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27730","description":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.","status":"published","published":"2023-02-16T00:00:00Z","modified":"2025-03-19T15:02:26Z","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":"2026-11-02T20:52:59.10334Z"}],"ghsa":[{"id":"GHSA-rp7v-crhj-652h","title":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute...","description":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.","status":"published","published":"2023-02-16T18:30:28Z","modified":"2023-03-04T05:07:23Z","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":"2026-11-02T14:54:16.14777Z"}],"nvd":[{"id":"CVE-2021-40555","description":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.","status":"published","published":"2023-02-16T16:15:11.85Z","modified":"2026-06-17T04:07:07.367Z","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":"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":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:07.323379Z"}],"osv":[{"id":"CVE-2021-40555","description":"Cross site scripting (XSS) vulnerability in flatCore-CMS 2.2.15 allows attackers to execute arbitrary code via description field on the new page creation form.","status":"published","published":"2023-02-16T16:15:11.85Z","modified":"2026-10-20T10:54:56.176260463Z","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"}]}}