{"id":"CVE-2026-115303","aliases":["EUVD-2026-112675","GHSA-ghmm-gqr3-xwc7"],"status":"published","title":"Contact Form by Supsystic \u003c 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping","description":"The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.","severity":{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00224,"percentile":0.13137,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-93"],"published":"2026-10-29T08:03:46Z","modified":"2026-10-29T15:18:27Z","products":[{"vendor":"supsysticcom","product":"contact form by supsystic"},{"vendor":"unknown","product":"contact form by supsystic"}],"references":[{"url":"https://wpscan.com/vulnerability/c32e3ccd-84cb-42a4-a343-353a02ccb541/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115303"},{"url":"https://wpscan.com/vulnerability/c32e3ccd-84cb-42a4-a343-353a02ccb541"},{"url":"https://github.com/advisories/GHSA-ghmm-gqr3-xwc7"}],"sources":{"cve":[{"id":"CVE-2026-115303","title":"Contact Form by Supsystic \u003c 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping","description":"The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.","status":"published","published":"2026-10-29T08:03:46.351Z","modified":"2026-10-29T10:45:50.346Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:20:01.618694Z"}],"euvd":[{"id":"EUVD-2026-112675","description":"The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.","status":"published","published":"2026-10-29T08:03:46Z","modified":"2026-10-29T10:45:50Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T16:59:17.279653Z"}],"ghsa":[{"id":"GHSA-ghmm-gqr3-xwc7","title":"The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or...","description":"The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.","status":"published","published":"2026-10-29T09:31:29Z","modified":"2026-10-29T12:30:36Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T15:14:38.164928Z"}],"nvd":[{"id":"CVE-2026-115303","description":"The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.","status":"published","published":"2026-10-29T09:17:08.097Z","modified":"2026-10-29T15:18:27.92Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:13:04.6346Z"}]}}