{"id":"CVE-2021-36833","aliases":["EUVD-2021-23409","GHSA-xhfm-f7f9-cpx6"],"status":"published","title":"WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability","description":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin \u003c= 4.8.6 at WordPress.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00529,"percentile":0.45274,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2022-05-20T19:55:54Z","modified":"2026-10-24T10:30:45Z","products":[{"vendor":"dvankooten","product":"mc4wp: mailchimp for wordpress"},{"vendor":"ibericode","product":"mailchimp_for_wordpress"},{"vendor":"ibericode","product":"mc4wp: mailchimp for wordpress"}],"references":[{"url":"https://wordpress.org/plugins/mailchimp-for-wp/#developers","tags":["x_refsource_CONFIRM","x_transferred","Product","web"]},{"url":"https://patchstack.com/database/vulnerability/mailchimp-for-wp/wordpress-mc4wp-plugin-4-8-6-authenticated-stored-cross-site-scripting-xss-vulnerability","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36833"},{"url":"https://github.com/advisories/GHSA-xhfm-f7f9-cpx6"}],"sources":{"cve":[{"id":"CVE-2021-36833","title":"WordPress MC4WP plugin \u003c= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability","description":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin \u003c= 4.8.6 at WordPress.","status":"published","published":"2022-05-20T19:55:54.898Z","modified":"2026-04-28T16:07:30.992Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-23409","description":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin \u003c= 4.8.6 at WordPress.","status":"published","published":"2022-05-20T19:55:54Z","modified":"2026-04-28T16:07:30Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:16.393887Z"}],"ghsa":[{"id":"GHSA-xhfm-f7f9-cpx6","title":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in...","description":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin \u003c= 4.8.6 at WordPress.","status":"published","published":"2022-05-21T00:00:25Z","modified":"2023-01-28T05:04:56Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:44:16.563052Z"}],"nvd":[{"id":"CVE-2021-36833","description":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin \u003c= 4.8.6 at WordPress.","status":"published","published":"2022-05-20T20:15:09.747Z","modified":"2026-06-17T03:59:29.797Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/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-2021-36833","description":"Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin \u003c= 4.8.6 at WordPress.","status":"published","published":"2022-05-20T20:15:09.747Z","modified":"2026-10-24T10:30:45.839175875Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:20.434873Z"}]}}