{"id":"CVE-2021-39609","aliases":["EUVD-2021-25966","GHSA-vq3v-4f2j-rpqf"],"status":"published","title":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","description":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","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":0.01714,"percentile":0.77599,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-08-23T20:28:38Z","modified":"2026-10-20T10:54:54Z","products":[{"vendor":"flatcore","product":"flatcore-cms"}],"references":[{"url":"https://github.com/flatCore/flatCore-CMS/issues/53","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-39609","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://www.nu11secur1ty.com/2021/08/cve-2021-39609.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39609"},{"url":"https://github.com/advisories/GHSA-vq3v-4f2j-rpqf"}],"sources":{"cve":[{"id":"CVE-2021-39609","description":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","status":"published","published":"2021-08-23T20:28:38Z","modified":"2024-08-04T02:13:37.276Z","updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-25966","description":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","status":"published","published":"2021-08-23T20:28:38Z","modified":"2024-08-04T02:13:37Z","updated_at":"2026-11-03T03:24:23.166742Z"}],"ghsa":[{"id":"GHSA-vq3v-4f2j-rpqf","title":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","description":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","status":"published","published":"2022-05-24T19:11:52Z","modified":"2023-01-30T05:01:37Z","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":"2026-11-02T14:46:26.905827Z"}],"nvd":[{"id":"CVE-2021-39609","description":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","status":"published","published":"2021-08-23T21:15:10.617Z","modified":"2026-06-17T04:03:52.733Z","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":"2026-11-02T14:06:57.318236Z"}],"osv":[{"id":"CVE-2021-39609","description":"Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.","status":"published","published":"2021-08-23T21:15:10.617Z","modified":"2026-10-20T10:54:54.681254497Z","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":"2026-11-02T15:44:20.843843Z"}]}}