{"id":"CVE-2021-24556","aliases":["EUVD-2021-11468","GHSA-559v-8mcf-64p4"],"status":"published","title":"Email Subscriber \u003c= 1.1 - Unauthenticated Stored Cross-Site Scripting (XSS)","description":"The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign\u0026page=kento_email_subscriber_list_settings), leading a Stored XSS issue.","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":"2026-11-10","score":0.01344,"percentile":0.71618,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-08-23T11:10:10Z","modified":"2026-06-17T03:40:13Z","products":[{"vendor":"email-subscriber_project","product":"email-subscriber"},{"vendor":"unknown","product":"email subscriber"}],"references":[{"url":"https://wpscan.com/vulnerability/f050aedc-f79f-4b27-acac-0cdb33b25af8","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://codevigilant.com/disclosure/2021/wp-plugin-email-subscriber/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24556"},{"url":"https://github.com/advisories/GHSA-559v-8mcf-64p4"}],"sources":{"cve":[{"id":"CVE-2021-24556","title":"Email Subscriber \u003c= 1.1 - Unauthenticated Stored Cross-Site Scripting (XSS)","description":"The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign\u0026page=kento_email_subscriber_list_settings), leading a Stored XSS issue.","status":"published","published":"2021-08-23T11:10:10Z","modified":"2024-08-03T19:35:20.064Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.000797Z"}],"euvd":[{"id":"EUVD-2021-11468","description":"The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign\u0026page=kento_email_subscriber_list_settings), leading a Stored XSS issue.","status":"published","published":"2021-08-23T11:10:10Z","modified":"2024-08-03T19:35:20Z","updated_at":"2026-11-03T03:24:56.857735Z"}],"ghsa":[{"id":"GHSA-559v-8mcf-64p4","title":"The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1,...","description":"The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign\u0026page=kento_email_subscriber_list_settings), leading a Stored XSS issue.","status":"published","published":"2022-05-24T19:11:55Z","modified":"2023-01-30T05:01:37Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:26.905827Z"}],"nvd":[{"id":"CVE-2021-24556","description":"The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign\u0026page=kento_email_subscriber_list_settings), leading a Stored XSS issue.","status":"published","published":"2021-08-23T12:15:09.957Z","modified":"2026-06-17T03:40:13.867Z","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":"2026-11-02T14:06:57.318236Z"}]}}