CVE-2026-19861
MediumCVSS 4.7Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before version 3.6.5.2 does not properly sanitise and escape a form field's value before including it in HTML notification emails. This allows 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.
Risk Assessment
The organization is exposed to phishing attacks or injection of malicious content into emails, potentially leading to recipient security compromise and loss of trust.
Recommendation
Immediately update the JetFormBuilder plugin to version 3.6.5.2 or later to prevent HTML injection.
Other vulnerabilities in JetFormBuilder
See all- CVE-2026-123482High
The Crocoblock JetFormBuilder plugin contains a Cross-site Scripting vulnerability (improper neutralization of input during web page generation). The Stored XSS issue affects versions through 3.6.8.
- CVE-2026-123484High
The WordPress JetFormBuilder plugin up to version 3.6.8 contains a DOM-Based XSS vulnerability caused by improper neutralization of input during web page generation. Malicious code is executed client-side within the browser DOM.
- CVE-2026-107431High
A Missing Authorization vulnerability in Crocoblock JetFormBuilder allows exploiting incorrectly configured access control security levels. Affects versions up to 3.6.6.
- CVE-2026-119481Critical
The JetFormBuilder plugin (through version 3.6.7.1) contains an incorrect privilege assignment vulnerability enabling privilege escalation. A low-privileged user can perform actions reserved for higher roles.
- CVE-2026-123860Medium
The JetFormBuilder plugin by Crocoblock up to and including 3.6.8 contains a Basic XSS vulnerability due to improper neutralization of script-related HTML tags, allowing code injection.
- CVE-2026-123483Medium
The JetFormBuilder plugin by Crocoblock up to and including 3.6.8 contains a Basic XSS vulnerability due to improper neutralization of script-related HTML tags, allowing code injection.
- CVE-2026-121977Medium
The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to stored cross-site scripting via the 'note' parameter (a form field written to post meta) in versions up to and including 3.6.8 due to insufficient input sanitization and output escaping. An unauthenticated attacker can inject arbitrary web scripts that execute when a user accesses an injected page. Successful exploitation requires a privileged user with the edit_others_posts capability to visit a form URL containing the attacker-created post ID.
- CVE-2026-119183High
The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a form field mapped to a post meta key (e.g., lst_cost) in all versions up to, and including, 3.6.8 due to insufficient input sanitization and output escaping. Exploitation requires a public Insert Post form writing to a post meta key and a Calculated Field whose formula references that key via the %META::key% macro.
- CVE-2026-119480Medium
The JetFormBuilder plugin (Crocoblock) contains a Path Traversal vulnerability due to improper limitation of a pathname to a restricted directory. The issue affects versions up to and including 3.6.7.1.
- CVE-2026-119479Medium
The JetFormBuilder plugin (Crocoblock) through 3.6.7.1 contains a Basic XSS vulnerability due to improper neutralization of script-related HTML tags. This can lead to code injection in the page context.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS