{"id":"CVE-2026-118167","aliases":["EUVD-2026-117912","GHSA-qpwm-gvfh-p35v"],"status":"published","title":"MC4WP: Mailchimp for WordPress \u003c 4.15.0 - Unauthenticated Subscription Audience Override","description":"The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form or bundled integration subscribes a visitor to matches the audience configured by the site owner, allowing unauthenticated visitors to subscribe arbitrary email addresses to any other audience in the site's connected Mailchimp account.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00214,"percentile":0.11865,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2026-11-06T06:00:28Z","modified":"2026-11-06T11:59:40Z","products":[{"vendor":"dvankooten","product":"mc4wp: mailchimp for wordpress"},{"vendor":"unknown","product":"mc4wp: mailchimp for wordpress"}],"references":[{"url":"https://wpscan.com/vulnerability/11752539-1dc8-4adb-a680-ce7ecaaff4d1/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118167"},{"url":"https://wpscan.com/vulnerability/11752539-1dc8-4adb-a680-ce7ecaaff4d1"},{"url":"https://github.com/advisories/GHSA-qpwm-gvfh-p35v"}],"sources":{"cve":[{"id":"CVE-2026-118167","title":"MC4WP: Mailchimp for WordPress \u003c 4.15.0 - Unauthenticated Subscription Audience Override","description":"The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form or bundled integration subscribes a visitor to matches the audience configured by the site owner, allowing unauthenticated visitors to subscribe arbitrary email addresses to any other audience in the site's connected Mailchimp account.","status":"published","published":"2026-11-06T06:00:28.08Z","modified":"2026-11-06T11:59:40.34Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-863"],"updated_at":"2026-11-06T12:28:03.779112Z"}],"euvd":[{"id":"EUVD-2026-117912","description":"The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form or bundled integration subscribes a visitor to matches the audience configured by the site owner, allowing unauthenticated visitors to subscribe arbitrary email addresses to any other audience in the site's connected Mailchimp account.","status":"published","published":"2026-11-06T06:00:28Z","modified":"2026-11-06T11:59:40Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-06T13:04:55.758116Z"}],"ghsa":[{"id":"GHSA-qpwm-gvfh-p35v","title":"The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp...","description":"The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form or bundled integration subscribes a visitor to matches the audience configured by the site owner, allowing unauthenticated visitors to subscribe arbitrary email addresses to any other audience in the site's connected Mailchimp account.","status":"published","published":"2026-11-06T06:30:23Z","modified":"2026-11-06T12:30:36Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-06T13:00:04.317934Z"}],"nvd":[{"id":"CVE-2026-118167","description":"The MC4WP: Mailchimp for WordPress plugin before 4.15.0 does not validate that the Mailchimp audience a sign-up form or bundled integration subscribes a visitor to matches the audience configured by the site owner, allowing unauthenticated visitors to subscribe arbitrary email addresses to any other audience in the site's connected Mailchimp account.","status":"published","published":"2026-11-06T06:16:40.71Z","modified":"2026-11-06T20:09:13.78Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-06T22:02:17.053381Z"}]}}