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.
Metrics
Affected Vendors & Products
References
History
Tue, 08 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Formbuilder Project
Formbuilder Project formbuilder Wordpress Wordpress wordpress |
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| Vendors & Products |
Formbuilder Project
Formbuilder Project formbuilder Wordpress Wordpress wordpress |
Sun, 06 Sep 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-93 | |
| Metrics |
ssvc
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Sun, 06 Sep 2026 09:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | JetFormBuilder < 3.6.5.2 - Unauthenticated Email Header Injection via Send Email Action | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: WPScan
Published: 2026-09-06T09:36:33.798Z
Updated: 2026-09-06T10:43:40.381Z
Reserved: 2026-08-14T10:01:01.293Z
Link: CVE-2026-19862
Updated: 2026-09-06T10:40:57.663Z
Status : Deferred
Published: 2026-09-06T10:17:14.563
Modified: 2026-09-08T19:09:21.310
Link: CVE-2026-19862
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