CVE-2026-19862: medium-severity vulnerability in JetFormBuilder
JetFormBuilder < 3.6.5.2 - Unauthenticated Email Header Injection via Send Email Action
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.8epss 0.2%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected products
Unknown · JetFormBuilderpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/b3fe5552-6736-4479-9c61-c05bc3328b8e/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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