JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution
The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Remote Code Execution in all versions up to 3.6.5.2. This is due to unsanitized request-supplied message content being passed through shortcode expansion before escaping was applied, and an incorrect escaping order in sanitize_wysiwyg() (wp_kses_post before wp_specialchars_decode) that allowed entity-encoded payloads to survive sanitization and be decoded in time for shortcode parsing. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes registered on the site by injecting shortcode syntax into form message content that is displayed on any page rendering a JetFormBuilder form.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | JetFormBuilder — Dynamic Blocks Form Builder | < 3.6.5.2 | 3.6.5.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-94- Platform
- WordPress
- Package
JetFormBuilder — Dynamic Blocks Form Builder- Disclosed
- 03.09.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 11f367a0-3a1a-474b-8dae-b3b0f942574a - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: JetFormBuilder — Dynamic Blocks Form Builder
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 25
- First → latest
- 05.2023 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 10
- Medium 13
Disclosures per year
- 2023: 3
- 2024: 1
- 2025: 3
- 2026: 18
-
JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution this entry
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