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.
Project Subscriptions
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Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
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 |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2026-09-06T10:43:40.381Z
Reserved: 2026-08-14T10:01:01.293Z
Link: CVE-2026-19862
No data.
Status : Received
Published: 2026-09-06T10:17:14.563
Modified: 2026-09-06T10:17:14.563
Link: CVE-2026-19862
No data.
OpenCVE Enrichment
Updated: 2026-09-06T10:30:05Z
Weaknesses
No weakness.