Vulnerability · Published Sep 5, 2026 · Assigned by WPScan

CVE-2026-19861JetFormBuilder < 3.6.5.2 - Unauthenticated Stored XSS via WYSIWYG Field in Notification Emails

Medium 4.7

In plain English

A medium-severity cross-site scripting in JetFormBuilder — Dynamic Blocks Form Builder from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.2%top 87.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.2 does not properly sanitise and escape a form field's value before including it in the HTML notification emails it sends, allowing unauthenticated users to inject arbitrary HTML into messages delivered to administrators and other recipients. Whether injected script executes depends on the recipient's mail client, but the injected markup is rendered regardless.

Affected products (as reported)

Vendor	Product	Versions
Unknown	JetFormBuilder — Dynamic Blocks Form Builder	0 – before 3.6.5.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://wpscan.com/vulnerability/c9c834a3-dc65-4972-9315-d4dcc7f26599/ exploit, vdb-entry, technical-description