{"id":"CVE-2026-19862","aliases":["EUVD-2026-72090","GHSA-9qrj-jm5v-82p9"],"status":"published","title":"JetFormBuilder \u003c 3.6.5.2 - Unauthenticated Email Header Injection via Send Email Action","description":"The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from address values it sources from submitted form fields before adding them to the headers of the e-mails it sends, allowing unauthenticated users to inject arbitrary e-mail headers, add hidden recipients and spoof the sender. Exploitation requires the site to be configured to take one of the message's addresses from a form field.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00243,"percentile":0.15553,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-93"],"published":"2026-09-06T09:36:33Z","modified":"2026-09-08T19:09:21Z","products":[{"vendor":"jetmonsters","product":"jetformbuilder"},{"vendor":"unknown","product":"jetformbuilder"}],"references":[{"url":"https://wpscan.com/vulnerability/b3fe5552-6736-4479-9c61-c05bc3328b8e/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19862"},{"url":"https://wpscan.com/vulnerability/b3fe5552-6736-4479-9c61-c05bc3328b8e"},{"url":"https://github.com/advisories/GHSA-9qrj-jm5v-82p9"}],"sources":{"cve":[{"id":"CVE-2026-19862","title":"JetFormBuilder \u003c 3.6.5.2 - Unauthenticated Email Header Injection via Send Email Action","description":"The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from address values it sources from submitted form fields before adding them to the headers of the e-mails it sends, allowing unauthenticated users to inject arbitrary e-mail headers, add hidden recipients and spoof the sender. Exploitation requires the site to be configured to take one of the message's addresses from a form field.","status":"published","published":"2026-09-06T09:36:33.798Z","modified":"2026-09-06T10:43:40.381Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T13:47:17.512524Z"}],"euvd":[{"id":"EUVD-2026-72090","description":"The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from address values it sources from submitted form fields before adding them to the headers of the e-mails it sends, allowing unauthenticated users to inject arbitrary e-mail headers, add hidden recipients and spoof the sender. Exploitation requires the site to be configured to take one of the message's addresses from a form field.","status":"published","published":"2026-09-06T09:36:33Z","modified":"2026-09-06T10:43:40Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:10.613767Z"}],"ghsa":[{"id":"GHSA-9qrj-jm5v-82p9","title":"The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from...","description":"The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from address values it sources from submitted form fields before adding them to the headers of the e-mails it sends, allowing unauthenticated users to inject arbitrary e-mail headers, add hidden recipients and spoof the sender. Exploitation requires the site to be configured to take one of the message's addresses from a form field.","status":"published","published":"2026-09-06T12:30:23Z","modified":"2026-09-06T12:30:30Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T15:11:25.773648Z"}],"nvd":[{"id":"CVE-2026-19862","description":"The JetFormBuilder WordPress plugin before 3.6.5.2 does not validate or strip line breaks from address values it sources from submitted form fields before adding them to the headers of the e-mails it sends, allowing unauthenticated users to inject arbitrary e-mail headers, add hidden recipients and spoof the sender. Exploitation requires the site to be configured to take one of the message's addresses from a form field.","status":"published","published":"2026-09-06T10:17:14.563Z","modified":"2026-09-08T19:09:21.31Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:12:44.082631Z"}]}}