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CVE-2026-19862

MEDIUM 4.8 CVSS 3.1
Published
September 6, 2026
Last modified
September 8, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-93
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown JetFormBuilder — Before 3.6.5.2

References

  • wpscan.com https://wpscan.com/vulnerability/b3fe5552-6736-4479-9c61-c05bc3328b8e/
  • nvd.nist.gov Official NVD record